Study debunks longstanding medical myth that a torn ACL can’t heal

Personal trainer Danyelle Anderson ruptured the anterior cruciate ligament (ACL) in her right knee during a kickboxing class.

“My whole world came crashing down, pretty much,” she said.

She was told by an orthopaedic surgeon that it wasn’t possible for her ACL to heal and that a surgical reconstruction was needed.

Reluctant to have an operation, she decided to see if her knee would improve with physiotherapy.

Three months later, a follow-up MRI showed her injury had gone from a grade three complete rupture, where the ligament is torn completely in half, to a less severe grade one tear, where some of the fibres are continuous.

“So basically, my ACL has reattached and is healing,” she said.

Ms Anderson’s story comes as no surprise to University of Melbourne researcher Associate Professor Stephanie Filbay.

Stephanie Filbay’s study on ACL injuries has caused a stir in medical circles.(ABC News: Steven Martin)

In a study that has garnered worldwide attention, she re-analysed the results of a Swedish trial involving 120 patients, comparing the MRIs of those who had surgery with others who underwent rehabilitation without surgery.

“What we found, surprisingly, was that two years after injury, in those who’d had rehabilitation only, 53 per cent had signs of healing on MRI,” Dr Filbay said.

“Even more surprising was that those with signs of healing reported better outcomes than those who’d had ACL surgery.”

Evidence of healing was taken to be the presence of continuous ACL fibres where previous MRIs showed a complete disconnect in the rupture zone, as well as the ligament becoming thicker and tauter and taking on a more normal appearance.

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The findings have become a hot topic in medical circles, raising questions about whether changes are needed to the way doctors treat ACL injuries.

“Everyone’s heard of incidents where someone’s on a waitlist for surgery with a torn ACL and they get opened up by the surgeon and then the surgeon says ‘well, the ACL is healed’,” Dr Filbay said.

“People thought they were extremely rare, and what the research is suggesting is that this occurs more commonly than we thought.”

Challenging accepted medical wisdom

Some surgeons have reacted to the study with scepticism, pointing to the small number of young, physically fit adult patients involved in the trial, and the difficulties of assessing healing on an MRI.

A model of the bones of a human knee, with someone pointing out the position of the ACL with a pen.

Justin Roe points out the position of the ACL on a model of a knee.(ABC News: Jack Ailwood)

The ACL is a rope-like band of tissue that runs through the middle of the knee, connecting the thigh bone to the shin bone and playing a vital role in keeping the joint stable.

For decades, the accepted medical wisdom has been that the ACL can’t heal because of poor blood supply inside the knee joint.

“It has been a myth that the ACL never heals, something that’s been set in stone,” specialist orthopaedic knee surgeon Justin Roe said.

A man in medical scrubs and a cap sitting down inside a room, across from a journalist.

Justin Roe says it’s a myth that the ACL never heals on its own.(ABC News: Jack Ailwood)

In practice, he said, doctors have observed that ACLs heal in some cases, but not in others.

“And that’s the holy grail — predicting who it does heal in and who it doesn’t,” Dr Roe said.

Surgical reconstruction has been viewed as the gold standard treatment, offering a more predictable outcome.

“We have good surgical techniques that have developed over the years, so we can say with confidence to patients that with a successful ACL reconstruction, they can get back to sport 70 to 80 per cent of the time,” Dr Roe said.

Dr Filbay said her research showed that patients treated non-surgically returned to sport at similar rates.

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Having Their Fallopian Tubes Removed Will Spare a Large Number of Women from Ovarian Cancer

By the time someone has symptoms of ovarian cancer, it is usually in an advanced state. Treatment is extraordinarily difficult, and, sadly, most people will die. One in 78 women will develop ovarian cancer, and more than 230,000 women in the U.S. are currently affected. Of these, approximately 80 percent have no family history of ovarian cancer and no indication that they were at risk for developing it.

In addition to the lack of early symptoms, late stage diagnosis occurs because there is no effective way to screen for or diagnose ovarian cancer in its earliest forms. A recent study of hundreds of thousands of women showed that screening with ultrasounds and blood testing did not save as many lives as hoped. In fact, ineffective screening leading to false reassurance (via a false negative result) is a serious concern even in high-risk patients.

Despite the name “ovarian cancer,” scientific discoveries from the last 20 years point to the fallopian tubes (two thin tubes that allow eggs to travel from the ovaries to the uterus) as the site of origin for the most common and most lethal form of ovarian cancer, high-grade serous carcinoma. Researchers found that cells lining the fallopian tubes are particularly prone to mutations in a cancer-suppressing gene called p53. These mutations allow for uncontrolled multiplication of cancerous cells and their spread throughout the body. In studying p53 mutations in ovarian cancer, scientists traced them back to tiny precancers in the fallopian tubes.

With most ovarian cancers originating in the fallopian tube, researchers decided to investigate whether people whose fallopian tubes have been removed, which is done to remove an ectopic pregnancy, treat inflammatory processes in the fallopian tube and sometimes as a form of birth control, , would have a reduced risk of developing ovarian cancer. Large epidemiologic studies show this to be the case, and it has been eye-opening for physicians like us. Given the seemingly insurtmountable challenge of developing a screening test, clinicians are beginning to offer people who have completed childbearing and who are already undergoing planned surgeries the option of removing their fallopian tubes in order to prevent ovarian cancer. This strategy, called “opportunistic salpingectomy,” is safe—and early data suggest it could reduce the risk of ovarian cancer by at least 65 percent. And as part of another gynecologic surgery, the preventative removal of fallopian tubes is supported by the American College of Obstetricians and Gynecologists and many professional societies worldwide.

Removing a person’s fallopian tubes may sound like a radical idea, especially because elective procedures do carry risk, but in the U.S. alone more than one million women undergo hysterectomies or tubal ligations every year, which are often considered elective as well. A simple change in surgical technique—removing the fallopian tubes with the uterus during hysterectomy, and removing instead of “tying” the tubes for those opting surgical contraception —would add ovarian cancer prevention to two of the most common gynecologic procedures without the need for a separate medical intervention. This is a move we, as surgeons, believe is in the best interests of our patients.

For the time being, surgery is simply the best possible option to reduce ovarian cancer risk. While ultrasound and other pelvic imaging techniques are useful for visualizing the uterus and ovaries, they cannot reliably show us the fallopian tubes. Furthermore, cancer cells from the fallopian tubes likely spread while they are still microscopic. Technology that can both “see” the tube and identify microscopic precancers would be needed for effective screening.

It has been similarly difficult to find a biomarker for early disease. Known biomarkers are detectable in the bloodstream usually only after cancer has advanced well beyond the fallopian tubes and the adjoining ovaries. Since early disease progression occurs by direct spread of microscopic cells from the fallopian tubes and onto the surfaces of organs and tissues in the abdominal cavity instead of through the blood, testing for blood biomarkers may never prove useful.

Unlike removing the ovaries, which causes menopause, removal of the fallopian tubes has no known negative health consequence after child-bearing is complete, and it adds nominal risk and time to the performance and recovery from the original surgical procedure. Salpingectomy during hysterectomy and in lieu of tubal ligation for surgical contraception was incorporated into routine practice in British Columbia more than 10 years ago. Researchers recently published preliminary data showing that this practice results in decreased incidence of ovarian cancer in the general population. The possibility that we could reduce the number of people affected by this lethal cancer with a change in surgical practice that has no lasting consequences after the completion of childbearing is a game changer. Extending this option to nongynecologic surgery would exponentially increase the number of people with access to the surgical prevention of ovarian cancer, and is the capstone of ongoing implementation research.

It’s important that people have greater agency over their health, especially when it comes to preventing a cancer for which we have neither adequate screening nor a dependable cure. Work is underway to ensure that all patients desiring surgical contraception or undergoing hysterectomy are offered an opportunistic salpingectomy. In addition, efforts to scale this beyond gynecological procedures to operations like gallbladder surgery, hernia repair, and other are mounting. Saving lives from ovarian cancer can become a reality in our lifetimes if we offer the opportunity of fallopian tube removal to the hundreds of thousands of patients undergoing abdominal operations every year in the U.S.

This is an opinion and analysis article, and the views expressed by the author or authors are not necessarily those of Scientific American.

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Abortion pills at heart of reproductive rights challenges in Poland, US

An activist in Poland was convicted on Tuesday for helping a pregnant woman access abortion pills, as a legal case in the US attempts to ban access to medical abortion altogether. In countries where reproductive rights are already under threat, abortion pills can provide discreet access to safe terminations, but legal battles are blocking access to medicine.

Activist Justyna Wydrzynska was sentenced to eight months of community service on Tuesday, after Polish courts found her guilty of helping another woman to have an abortion.   

Poland has some of Europe’s most restrictive abortion laws, with termination only allowed in cases of rape, incest or threat to the mother’s life or health.  

Wydrzynska, who plans to appeal the ruling, was arrested in April 2022 for providing abortion pills to a woman named Anna who was around 12-weeks pregnant and a suspected victim of domestic violence.  

“It happened in 2020 during the Covid crisis,” says Mara Clarke, co-founder of Supporting Abortions for Everyone (SAFE), a group that defends access to abortions in Europe.  “The postal service wasn’t working as normal and we didn’t know if the medicine would arrive in time to help this woman if it was delivered from overseas.” 

The World Health Organization (WHO) advises that medical abortions – carried out using tablets sometimes called abortion pills – can be safely self-managed at home in the first 12 weeks of pregnancy.  

“Anna’s husband initially prevented her from going to get an abortion in Germany, and then confiscated her abortion pills after reading her messages,” says Clarke. He reported Wydrzynska to the police, who then conducted a search of her home.  

The maximum penalty in Poland for providing help to carry out an abortion is three years in prison – this makes Wydrzynska’s case “the first time in Europe that an activist has risked being sent to prison for helping a woman who wanted to have an abortion”, says Clarke. 

“The fact that Justyna Wydrzynska risked three years in prison for responding to a plea for help from a woman and from a mother who was trying to escape an abusive relationship is a crime in itself against human rights and the right to bodily autonomy.” 

‘No other way’ 

“I’m not feeling guilty at all,” Wydrzynska said in a press conference on Wednesday. “I know I did right. When your reproductive rights are restricted in a country like Poland… there was no other way to help than to share the pills.” 

The WHO recommends the use of two abortion pills, Mifepristone and Misoprostol, as an accessible and affordable means of terminating a pregnancy which can be taken anywhere, for example at home instead of in a hospital. (Misoprostol can also be used as a stand-alone drug.)

In addition, the pills can also be taken without direct supervision from a medical supervisor. As such, global usage surged during the Covid pandemic when access to normal health procedures was disrupted.   

In France, the US, medical abortions now account for more than 50 percent of total terminations. In the UK and India almost all terminations are now carried out using abortion pills. 

The safety and relative ease of taking the medicine also makes abortion pills a useful asset to women seeking abortions in countries where the law limits access. 

In Poland, where there are severe restrictions on procedural abortions conducted by medical practitioners, abortion pills offer a discreet lifeline to safe terminations. Typically, activist groups purchase the tablets to be sent by post from external countries via third-party organisations in order to avoid legal consequences. 

In the US (which, along with Poland, is one of only four countries to make abortion legislation more restrictive in the past three decades) the national postal service has emerged as a key channel to providing abortion pills in states where legislation has blocked access to terminations.   

‘Fear and intimidation’ 

Yet, this channel is now under new threat. On Wednesday, a US judge in Amarillo, Texas heard arguments to ban sales of Mifepristone across the country – even in states where abortion is legal. This would mean that activists could no longer purchase the drug in states with more permissive laws to send to women facing restrictions. 

Anti-abortion activists who brought the case to federal court hope that banning the prescription drug would move the country closer to a total ban on the practice, especially as the presiding judge, Matthew Kacsmaryk, is a deeply conservative Christian with a personal history of opposition to abortion and a court record of favoring right-wing causes.

The United States Food and Drug Administration has urged the judge to reject the request on the grounds that it would force women to have unnecessary surgical abortions and greatly increasing wait times at already overburdened clinics. 

 “The public interest would be dramatically harmed by effectively withdrawing from the marketplace a safe and effective drug that has lawfully been on the market for 22 years,” it said. Current US laws allow use of Mifepristone up to 10 weeks of pregnancy. 

At the same time in Texas, another case has been brought by a man suing three women who he says helped his wife obtain abortion pills.  

He alleges the three women texted his former partner information about Aid Access, a group that provides abortion medication by mail, and that one of the women dropped off the pills to his ex-wife. 

It is the first such lawsuit to be brought in the US since the Supreme Court overturned laws enshrining abortion as a fundamental right. 

As in Poland, the case is a “terrifying example of how anti-abortion extremists use the judicial system as an instrument of fear and intimidation”, says Irene Donadio spokesperson for the International Planned Parenthood Federation European Network. 

‘I would have done the same’ 

In Poland, Anna, the pregnant woman Wydrzynska gave abortion pills to, was never able to take the medicine. Days after her husband confiscated the pills, she miscarried. Yet, in an open letter published on March 2 she wrote to Wydrzynska to express her thanks.  

“It was an expression of humanity. Because in a situation where people who had a moral obligation, and in some cases a legal obligation, to help me stood up and washed their hands, only you gave me a hand.” 

For Donadio, it is no surprise that abortion pills are at the heart of legal challenges against abortion on both sides of the Atlantic. The fact that they can be taken without medical supervision, and even be bought in pharmacies in many countries, makes them an unprecedented channel for female empowerment. 

“Medical abortion is clearly the result of medical progress that can be used to emancipate women and to protect their health,” says Donadio. “It is revolutionary. That’s why it’s so disturbing for certain forces because it allows women control over their body, over reproduction, and over their life.” 

As well as opposition, there is also support for access to the medicine. In the US, if the federal judge does rule for a temporary ban on Mifepristone, the FDA would likely immediately appeal it, on the basis of the drug’s history and its own authority to regulate pharmaceuticals. 

In Poland, politicians seem to be hearing the message. On March 6, Wydrzynska spoke in front of MPs from Poland’s centre-left party, Nowa Lewica, to defend her actions. The next day a law aiming to criminalise communicating information about abortion failed to pass after being rejected by a large majority in parliament. 

Activists are also unlikely to drop the cause. When Wydrzynska has appeared in court in Warsaw dozens of women have gathered holding banners bearing the message: “I would have done the same as Justyna”.  

This article was adapted from the original in French.

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New Book Explores Why Medicine Doesn’t Always Work

Jan. 31, 2023 –In How Medicine Works and When It Doesn’t, F. Perry Wilson, MD, guides readers through the murky and often treacherous landscape of modern medicine. The book could well have been titled Marcus Welby Doesn’t Live Here Anymore. In Wilson’s view, Americans no longer trust their doctors the way they once did, and that lack of trust can have life-threatening consequences.

But patients aren’t to blame. Wilson – a kidney specialist at Yale University and a frequent contributor to Medscape, the sister company of WebMD – explains how charlatans have managed to blur the line between quackery and solid science-based advice, leaving Americans in a relentless tug-of-war for their attention, dollars, and, ultimately, their well-being. 

Meanwhile, he argues, doctors have created a “vacuum” for misinformation to fill by not working hard enough to build relationships of trust with their patients. Crucially, he says, that means being transparent with people, even when the answer to their question is “I don’t know.” Certainty may be reassuring, but it’s the exception in medicine, not the rule. Anyone who says otherwise – well, they’re selling something.

The good news, according to Wilson, is that with the right tools, people can immunize themselves against misinformation, inflated claims, and bogus miracle cures.

Below is an excerpt from How Medicine Works and When It Doesn’t: Learning Who to Trust to Get and Stay Healthy (copyright 2023 by F. P. Wilson, MD. Reprinted with permission of Grand Central Publishing).

How Medicine Works and When It Doesn’t

I lost Ms. Meyer twenty-five minutes into her first visit.

Doctors are often a bit trepidatious meeting a patient for the first time. By the time we open the door to the exam room, we’ve read through your chart, looked at your blood work, and made some mental notes of issues we want to address. Some of the more sophisticated practices even have a picture of you in the electronic medical record, so we have a sense of what you look like. I usually take a beat before I open the door, a quick moment to forget my research lab, my paperwork, a conversation with a coworker, to turn my focus to you, the patient, waiting in that room. It is my hope, standing just on the other side of an inch of wood, that you and I will form a bond, or, more aptly, a “therapeutic alliance.” I’ve always liked that term – the idea that you and I are on the same side of some great war, that together we can overcome obstacles. But that alliance doesn’t come easily. And lately, it has been harder to forge than ever.

Ms. Meyer was standing in the center of the room, arms crossed. Smartly dressed and thin, she lived in one of the affluent Philadelphia suburbs – on “the Main Line” – and it showed, in her subtle but clearly expensive jewelry as well as her demeanor. She looked out of place in my resident-run medical clinic, which primarily catered to less wealthy inhabitants of West Philadelphia. But what struck me most was the emotion that radiated from her. Ms. Meyer was angry. “What brought you here today?” I asked her, using my standard first question. Later in my career, I would learn to replace that line with something more open: “How can I help you?” or even “Tell me about yourself.” But it hardly mattered.

She was exhausted, she said. Almost no energy. So drained she could barely get out of bed. Unable to focus during the day, she tossed and turned all night and repeated the cycle day in and day out. It was, she said, simply untenable. I asked how long it had been happening.

“Months,” she said. “Years, actually. You are literally the sixth doctor I’ve seen about this.” Her anger broke to reveal desperation. Second opinions are common enough in medical practice. Third opinions, for difficult cases, are not unheard of. But I had never been a sixth opinion before, and I felt immediately uncomfortable. Notbecause I wasn’t confident in my diagnostic abilities – like all young doctors I hadn’t yet learned how much I didn’t know – but because I was worried that whatever thoughts I had about her possible ailment would not be enough. What could I offer that all these others couldn’t?

I kept my poker face firmly intact and waited.

Eleven seconds. That’s how long the typical doctor waits before interrupting a patient, according to a study in the Journal of General Internal Medicine. Determined to not be a typical doctor, I let her talk, in her own words and in her own time. I thought my attentive listening would frame our relationship differently – that she might see me as a physician who was conscientious, methodical. But it backfired. It was clear she resented the fact that she had to relay the same information to me that she had already told to the five doctors that came before me.

One of the most important skills a doctor has is to read the room. So I switched from respectful listening to diagnosing. I tried to troubleshoot symptoms of possible thyroid dysfunction, anemia, sleep apnea, lymphoma and other cancers. I asked about her family history, her history of drug or alcohol abuse, her sexual history. I even made sure I didn’t miss questions pertaining to pregnancy, because (this one comes from experience) you should never assume someone isn’t pregnant. I reviewed her lab work: Pages upon pages of blood and urine tests. Even CT scans of the head, chest, abdomen, and pelvis. Nothing was out of order. Nothing that we can measurein a lab or in the belly of a CT scanner, at least.

But her affect was off, and her mood was sad. Ms. Meyer seemed, frankly, depressed. There is a formal way to diagnose major depressive disorder; a patient must display five of nine classic symptoms (such as loss of interest in activities they used to enjoy, fatigue, or weight changes). Ms. Meyer had eight of nine, a clear-cut case of major depression, according to the diagnostic manuals. But was it depression? Or was it something else, and the frustration of living with that something else had led to depression?

The nine classic symptoms are far from the only way depression can manifest. As a disease that lives in the brain, the symptoms can be legion – and can lead doctors and patients on costly, and often fruitless, wild-goose chases.

“Listen,” I said, “not everything is super-clear-cut in Medicine. I think part of this might be a manifestation of depression. It’s really common. Maybe we should try treating that and seeing if your energy improves.”

Right there. That’s when I lost her.

I could tell from the set of her jaw, the way her eyes stopped looking directly at mine and flickered off a bit, centering on my forehead. I could tell from her silence, and from the slight droop in her posture, that she had lost hope. We talked some more, but the visit was over. There would be no therapeutic alliance. I asked her to call the number on the back of her insurance card to set up a consultation with a mental health professional and made her a follow-up appointment with me in a month, which she, unsurprisingly, missed. My rush to a diagnosis – in this case a diagnosis that comes with a stigma (unwarranted, but a stigma nonetheless) – drove her away from both me and from conventional medicine. And had she even heard a diagnosis at all? Or had she heard, like so many women have about so many concerns over so many years, “It’s all in your head”?

I didn’t see her for another year. When I did, she was having a seizure in the emergency room, the result of a “water cleanse,” anaturopathic practitioner had prescribed. Forcing herself to drink gallons of water a day, she had diluted the sodium content in her blood. When her sodium level got too low, her brain could not appropriately send electrical signals, and seizures ensued. She would survive, thankfully, and tell me later that she had never feltbetter. She had been told all her problems were due to heavy metal toxicity. (Lab work would not confirm this.) This diagnosis had led her into a slew of questionable medical practices, including regular “cleanses” and chelation therapy – where substances similar to what you might find in water softening tablets are injected into the blood to bind harmful metals. Chelation therapy runs around $10,000 to $20,000 per year and is not covered by insurance.

The striking thing was that she positively shone with confidence and hope. Lying in a hospital bed, recovering from life-threatening seizures, she was, in a word, happy.

And I felt … Well, to be honest, I think the emotion I felt was jealousy. It would be one thing if no one could help poor Ms. Meyer, depressed and unwilling to even entertain the diagnosis, but someone did help her. Someone whose worldview was, in my mind, irrational at best and exploitative at worst. My instinct was to dismissMs. Meyer as another victim of an industry of hucksters, as a rube. She had been taken in with empty promises and false hope, and some grifter had extracted cash from her in the manner of televangelists and late-night psychic hotlines. His “treatment” landed herin the emergency room with generalized tonic-clonic seizures that could have killed her. This was bad medicine, plain and simple.

But – and this “but” was why I continue to think about Ms. Meyer – in the way that mattered to her, she got better. The huckster helped.

It took me a long time to figure out why – fifteen years, actually. In that time, I finished my residency and fellowship at the University of Pennsylvania. I got a master’s degree in clinical epidemiology (the study of how diseases affect a population). I was brought ontothe faculty at Yale University and started a research lab running clinical trials to try and generate the hard data that would really save lives. I became a scientist and a researcher, and a physician caring for the sickest of the sick. I lectured around the world on topics ranging from acute kidney injury to artificial intelligence and published more than one hundred peer-reviewed medical manuscripts. And yet, somehow, I knew that all the research studies I did would be for nothing if I couldn’t figure out how I – how Medicine – had failed Ms. Meyer and all the people out there who feel abandoned, ignored by the system, or overwhelmed by medical information.

Why were people turning to their family and friends or social media for medical advice when physicians are willing and able to provide the best possible information? Was it simply the cost of healthcare? Or was something deeper going on? And though it took time, what I figured out will shine a light on why doctors have lost touch with their patients, why patients have lost faith in their doctors, and how we can get back to that therapeutic alliance that we all need in order to be truly healthy. That is what this book is all about.

It turns out the most powerful force in Medicine is not an antibiotic. It isn’t stem cell therapy, genetic engineering, or robotic surgery. The most powerful force in Medicine is trust. It is the trust that lives between a patient and a physician, and it goes both ways. I trust you to tell me the truth about how you feel and what you want. You trust me to give you the best advice I can possibly give. We trust each other to fight against whatever ails you, physical or mental, to the best of our abilities. Ms. Meyer did not trust me. That was my failure, not hers. And that personal failure is a mirror of the failure of Medicine writ large – our failure to connect with patients, to empathize, to believe that their ailment is real and profound, and to honestly explain how medical science works and succeeds, and why it sometimes doesn’t. We doctors have failed to create an environment of trust. And into that vacuum, others have stepped.

It’s not entirely doctors’ fault, of course. The average primary care physician has less than fifteen minutes to conduct a typical new-patient visit. If the doctor doesn’t stick to that time, the practice will go out of business – overwhelmed by payments for malpractice insurance, overhead, and dwindling reimbursements from insurers. It’s hard to create trust in fifteen minutes. Combine our limited schedules with a seemingly unfeeling healthcare system, which sometimes charges thousands of dollars for an ambulance ride to the hospital and tens of thousands of dollars for even routine care, and it is no wonder why, according to a study in the New England Journal of Medicine, trust in physicians is lower in the United States than in twenty-three other economically developed countries.

While the healthcare system and physicians are not synonymous, physicians are the face of that system. In earlier times, we ran that system. It is no longer the case. Most physicians haven’t realized this yet, but we are no longer a managerial class. We are labor, plain and simple, working for others who, without medical training but with significant business acumen, use our labor to generate profit for companies and shareholders. Part of the key torestoring trust between patients and doctors is for all of us to start fighting to reform the system. And doctors should be on the front line of that battle.

There is a right way and a wrong way to earn someone’s trust.One key lesson in this book is that it takes a keen observer to tell thedifference. Honesty, integrity, transparency, validation: These are good ways to create trust, and physicians need to commit to them wholeheartedly if we ever want our patients to take us seriously. Patients need to commit to honesty and transparency as well, even when the truth is painful. But less-than-scrupulous individuals can also leverage certain cognitive biases to create trust in ways that are manipulative. Trust hacking like this is a central reason modern medicine has lost ground to others who promise a quick fix for what ails you. It’s important not only to evaluate your own methods, but also to be able to spot whether someone is trying to earn your trust in an ethical way, to spot bad actors whose intentions may have little to do with actually helping you.

There are several ways to hack trust. One is to give an impression of certainty. The naturopath who treated Ms. Meyer was unambivalent. He told her exactly what was wrong with her: heavy metal toxicity. There was no long list of potential alternative diagnoses, no acknowledgment of symptoms that were typical or atypical for that diagnosis. He provided clarity and, through that, an impression of competence. To know who you can truly trust, you have to learn to recognize this particular trick – you have to be skeptical of people who are overly certain, overly confident. Health is never clear-cut; nothing is 100 percent safe and nothing is 100 percent effective.

Anyone who tells you otherwise is selling something. This book will show you how to grapple with medical uncertainty and make rational decisions in the face of risk.

Traditional doctors like me are trained early on to hedge their bets. Patients hate this. Ask a doctor if the medication you are being prescribed will work, and they will say something like “For most people, this is quite effective” or “I think there’s a good chance” or (my personal pet peeve) “I don’t have a crystal ball.” This doctorly ambivalence is born out of long experience. We all have patients who do well, and we all have patients who do badly. We don’t want to lie to you. We’re doing the best we can. And, look, I know that this is frustrating.

Neil deGrasse Tyson, the astronomer and brilliant science communicator, once wrote, “The good thing about Science is that it’s true, whether or not you believe in it.” When it comes to the speed of light, the formation of nebulae, and the behavior of atoms, this is true. The laws of the universe are the laws of the universe; they “change” only insofar as our tools to study them have improved. But Medicine is not astrophysics. It is not an exact science. Or if it is, we have not yet explored enough of the nooks and crannies of the human machine to be able to fix it perfectly.

Physicians, if we are being honest, will admit that their best advice is still a guess. A very good guess – informed by years of training and centuries of trial and error. But we are still playing the odds. Trust hackers, though, are never so equivocal. Ask your local homeopath how to cure your headaches, and you will be told they have just the thing.

You can also hack trust by telling people what they want to hear. For someone who is sick, tell them they will be cured. For someone who is dying, tell them they will live. For someone who feelsa stigma surrounding their depression, tell them it is not their own brain, but an external toxin, that is wreaking havoc. To know who to trust with your health, you need to first know yourself. You need to know, deep down, what you want to be true. And be careful of those who tell you it is true.

This skill, consciously avoiding the cognitive bias known as “motivated reasoning” (the tendency to interpret facts in a way that conforms with your desired outcome), is challenging for all of us – doctors included. But it is probably the most critical skill to have ifyou want to make the best, most rational choices about your health. The answer you are looking for might not be the right answer. That’s why we will discuss, right in the first chapter, how before you know who else to trust, you have to learn to trust yourself.

The community of people vying for your trust is truly massive. It spans individuals from your neighbors and your friends on social media to the talking heads on the nightly news. All of them are competing in a trust marketplace, and not all of them are playing fair. A smattering of recent headlines illustrates the overwhelming amount of medical-sounding “facts” you may have been exposed to: coffee cures cancer; depressed mothers give birth to autistic children; marijuana is a gateway to opiate abuse; eggs increase the risk of heart disease; eggs decrease the risk of heart disease. Each day, we are inundated with confusing and conflicting headlines like these, designed more to shock, sell, and generate clicks than to inform. I will give you the skills to figure out what health information can be trusted and what is best left unliked and unretweeted.

The information age brought with it the promise of democratization of truth, where knowledge could be accessed and disseminated at virtually no cost by anyone in the world. But that promisehas been broken. Instead, the information age has taught us that data is cheap but good data is priceless. We are awash in bad data, false inference, and “alternative facts.” In that environment, we are all – doctors and patients alike – subject to our deepest biases. We are able to look for “facts” that fit the narrative of our lives, and never forced to question our own belief systems. If we can’t interrogate the quality of the information we’re consuming, we can’t make the best choices about our health. It’s that simple.

When you read this book, you’ll learn that doctors aren’t perfect. As humans, we have our own biases. Rigorous studies have shown that those biases lead to differential treatment by race, sexual orientation, and body mass index. While most physicians are worthy of your trust, not all of them are. I’ll teach you how to recognize those who aren’t putting your interests first.

It’s not wrong to be skeptical of Medicine. Medical science has been developing, evolving, and advancing for the past one hundred years, and has had many stumbles along the way. Scandals from the repressing of information about harms linked to Vioxx (a drug that was supposed to relieve pain), to the effects of thalidomide in pregnancy (which was designed to reduce nausea but led to severe birth defects), to the devastating heart problems caused by the diet pill fen-phen remind us that the profit motive can corrupt the bestscience. Alleged frauds like the linking of the measles, mumps, and rubella (MMR) vaccine to autism diagnoses pollute the waters of inquiry, launch billion-dollar businesses, and leave the public unsure of what to really believe.

Why would I, a physician and researcher, highlight the failures of medical research? Because Medicine isn’t perfect or complete. It is also, in terms of the alleviation of human suffering, the single greatest achievement of humankind. But you need to understand Medicine, warts and all, to make the right choices about your own health. We must be skeptical, but never cynical.

This book will also detail some of the astounding successes and breakthroughs that medical science has made possible. For the vast majority of human history, life-or-death issues were determined by randomness or chance. Maybe it was a broken bone that prevented someone from hunting and gathering, or a cut on the arm that got infected, or a childbirth that developed complications for the mother and her child. It’s no mystery why before the modern era, one in four babies died before their first birthday. And those who survived their first year had only a fifty-fifty chance of reaching adulthood. These days, the script has been flipped. Ninety-five percent of humans born on Earth today will reach adulthood, and life expectancy has more than doubled in the last two hundred years. We’ve witnessed the near eradication of diseases like smallpox, rubella, and polio, which would have easily killed or disabled our ancestors, and we’ve achieved major advances in drug treatment and medical procedures that can prolong our lives despite the onset of deadly diseases. Medical science, translated from lab bench to bedside to the doctor’s prescription pad, has been nothing short of miraculous. It has transformed the human experience from lives that are, to steal from Thomas Hobbes, “nasty, brutish and short,” to the lives we live today, which, while not without their troubles, would be unrecognizable to our ancestors.

Here we stand, in the midst of a torrent of information that would have been inconceivable thirty years ago. Some of it is good, some is bad, but all is colored by our own biases and preconceptions. Decisions about your health happen every single day. If you want to be in control, you need to know how to separate the good from the bad, whether it comes from someone sitting atop the ivory tower, or from your friend on Facebook. This book is about medical science. But it’s really about learning to trust again. When you finish reading it, you will no longer be swayed by the loudest voice, the most impassioned plea, or the most retweeted article. You will be able to trust your doctor, trust yourself, and trust Medicine – our imperfect science and the single greatest force for good in the world today.

Excerpted from the book How Medicine Works And When It Doesn’t: Learning Who to Trust to Get and Stay Healthy by F. Perry Wilson, MD. Copyright 2023 by F. P. Wilson, MD. Reprinted with permission of Grand Central Publishing. All rights reserved.

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