Vested interests and evidence-based medicine

Doctor in white coat with stethoskop is offered money

One of the greatest problems in medicine today is that academic medicine has been sold to the highest bidder. Under the guise of ‘Evidence Based Medicine’ the public has been sold fraudulent goods, and the result is that people suffer from unnecessary but lucrative procedures and take unnecessary but lucrative medications. Let me explain. Much of the data we use in medicine comes from epidemiology studies – where one thing is associated with another. It is easy to prove association, but much harder to prove that one thing causes the other, which is what we want to know.

It is very dangerous to accept data from epidemiologic studies because there are too many confounding factors. That is how we wound up with millions of women prescribed hormone replacement therapy (HRT), which turned out to be giving them cancer. In the late 1990s, there was a very strong association between women taking HRT and reduction of heart disease – about a 50% reduction. Based on this flimsy evidence, millions of women were prescribed the drug. It turns out, that when the trials were finally completed a decade or so later, that HRT did NOT reduce heart disease at all. Instead, women who took HRT were also healthier in many other ways – and these confounding factors accounted for the apparent heart disease risk reduction.

BreastCancerHRT2

It further turns out that HRT was giving women breast cancer. When prescribing of HRT increased through the 1980s and 1990s, breast cancer also increased. But tellingly, when HRT decreased around year 2000, breast cancer also decreased by 6.7%. BreastCancerWHIAlmost nothing in medicine causes this type of sustained decrease in cancer, and the implication is that HRT caused cancer in millions of women. The worst part is that it was the DOCTORS that caused all these cancers, by widely prescribing a lucrative medication based only on flimsy evidence and lots of encouragement by drug companies.

The problem is not the drug company, which will always do whatever it can do push its drugs. The companies duty is to make money for shareholders, not to safeguard the public. The problem is that the doctors and the universities have financial conflicts of interest by taking millions of $$$ from these companies. The duty of doctors and universities is to guard the public health and to scientific truth – which is much harder when all your funding comes from companies that have vested interests in proving benefits. Doctors and universities, and everybody else in the world knows that you don’t bite the hand that feeds you.

Pay-and-Get-Published_scaledThe New York Times reported on the recent CABANA trial of catheter ablation for atrial fibrillation. Once again, a highly invasive but lucrative procedure became widespread based on no evidence at all. But wide promotion by device companies led many doctors to inflict this on unknowing but trusting patients. How are we to protect against this? This is where evidence-based medicine is supposed to shine, but demanding randomized trials to prove that certain procedures/ drugs either work or don’t. Great, right? Well, not so much.

Biased researchers

The problem is when all of these trials are paid for by industry, then the evidence is severely biased. If the evidence base is biased, then evidence based medicine is completely worthless. It’s one thing to say that Harvard researcher prove that XYZ drug cures cancer. We might believe this. But, it’s another thing to say that XYZ drug maker proves that their drug cures cancer. In this case, almost none of us believe it. The solution, if you are XYZ drug maker? Simple. Pay Harvard researchers millions of $$$ to do a study, but bias it so severely that it is a virtual certainty that XYZ drug looks like it works. Then claim that it was the Harvard researcher who proved XYZ drug cures cancer.

It’s a win-win-win situation. XYZ drug maker is happy to have ‘evidence’ that ‘proves’ their drug works. Harvard is happy with all the $$$. Researcher is happy with all the $$$ and the prestige of ‘proving’ the drug works. It actually matters almost not at all if the drug actually works or not. It’s fantastically easy to design a trial and rig the results as we’ll soon see. The only loser? Public health – it spends money on useless or dangerous medications and people die. No biggie for the universities and doctors lining their pockets.

The New York Times recently published an article describing how the NIH, the top American government health research agency pulled the plug on a $100 million trial. This study was supposed to answer the question of whether moderate alcohol intake is beneficial for health. It’s a great question, because much epidemiological data supports this hypothesis, but this data can only be considered hypothesis generating and not definitive. So the NIH decided to do a randomized trial on this to settle the question. But, the researchers from Harvard got all the money from alcohol companies. Five large beer companies, like Carlsberg agreed to foot most of the bill for the trial.

This is crazy, and obviously puts researchers in conflict, because if they are funded by beer companies, then they will be much, much more likely to find results favourable to them. Consider the case in sugar sweetened beverages. When reviewing all the trials that linked sugar sweetened beverages (SSB) to obesity, researchers found 60 published articles.

SSB1

26 of the articles found there was no association, and 34 found a positive association – ie. that sugar was linked to obesity. Pretty close, right? If you didn’t know about conflicts of interest, then you would think that it’s equivocal whether sugar causes obesity or not. What if we were to show which papers were funded by the sugar industry?

SSB2

This is what you find. 25 of the 26 (96.2%) papers showing that sugar is NOT linked to obesity were funded by the sugar industry! When you look at the papers that suggested sugar WAS linked to obesity, only 1 of the 34 (2.9%) was funded by the sugar industry. The ‘scientific’ result was based almost entirely on who pays the researchers. University professors and doctors have sold their scientific opinions and integrity to the highest bidder. For example, researchers at the University of Toronto, like Dr. John Sievenpiper are regularly trotted out in the national media saying that sugar is practically a health food. It turns out that his group receives millions of $$$ to have this opinion. It sure sounds a lot better to say that ‘Doctors at the University of Toronto say sugar not linked to obesity’ than ‘Sugar company research shows that sugar not linked to obesity’.

Biased research and overprescription

The same goes for medications. Dr. Aseem Malhotra, a UK cardiologist made headlines writing a paper describing one of the most insidious problems in modern medicine – too much prescription medicine, driven mainly by biased research. Statin medications are one of the most lucrative drug classes of the last 20 years. But almost all trials of these medications have been funded extensively by the companies themselves. Problem? It’s an open secret that doctors and universities are paid millions of $$$ to perform these trials, which then show that statins are the best thing since sliced bread.

Where there any non-drug-company funded trials on statins? Sure. The ALLHAT study, enrolling more than 10,000 patients showed that taking pravastatin did NOT reduce heart disease. Interestingly, this study is all but forgotten in all the drug company driven advertising to doctors about how statins are so amazingly good for health that they should be practically considered vitamin S. Virtually all drug funded studies show statins save lives. The only major non-drug funded study shows it makes little or no difference in primary prevention.

These financial conflicts of interest are not merely academic musings. People die. Take the opioid crisis for example. Drug companies paid lots of money to doctors to prescribe opioids. People got addicted, and many died. CNN showed that a group of doctors who received over $10,000 from the opioid company prescribed $1.2 million worth of drugs, compared to doctors who received less than $20 from drug companies prescribed only $34,000.

The solution is really very simply. Eliminate all financial conflicts of interest in research. That is, if a researcher works for Harvard then it is paid by Harvard, not by the drug company. If Harvard researchers want to publish a study, then it should be funded by Harvard, not some drug company that pays millions of $$$ to get a great result. If you work for a university, you should not be allowed to receive any money from anybody else. These rules are in place for almost every other profession. But for research and medicine, taking money from the highest bidder is not only allowed, it is standard operating procedure.

There will be those who argue that there will be no money for research. I say, so what? That supposes that biased research is better than none at all. That is rather like arguing that a corrupt policeman is better than none at all. I would rather have no research than biased ones.


Dr. Jason Fung

 

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4 comments

  1. Carol
    This is a great article. So true.
  2. Jane
    How refreshing to read an article that puts in black and white what we all suspect . Every time I hear about another study that demonstrates something or other is good or bad for you the first question I want to ask is how do they know. The human body is such a complex system and there are so many factors to take into account. I’m not a medic but even I can figure that out. So if you have enough money you get to make the facts fit and blow the consequences to the rest of us.
  3. Mark
    Boom! Dr. Fung always bringing the truth bombs! Never stop!
  4. jenny
    Congratulations once again to Dr. Fung raising awareness of such studies and articles to our attention. It brings the reality, what can one trust anymore. Putting aside excellence of article as within by Dr. Fung, so clear and to the point, one only has to sit in a Doctors surgery and see the reality of vested interests or business within the Medical Industry.

    An example, does one recall the days if you went for an ear infection and it was a simple case your Doctor checked your ear, gave a recommendation whether medication or other. Today, sit and observe when patients come out the door how many pieces of paper in their hands, test for this, test for that, test, test test, yes in some situations I am sure tests are required without doubt, it has got to the degree of concern in my personal opinion, and I base this on a recent incident of my husband, I quote...

    "He attended his doctor for a knee injury, I point out this point caused by an accident in the home it did not erupt suddenly or from unknown sources. Yet Doctor suggested recommended, he have a test for acid in the urine! for goodness sake, why would one want to go for tests, for an injury that was self afflicted in the home is the concern doubt question, as to whether all the tests we are informed are necessary, are they really necessary or are they pressure from Industry that Doctors are to push tests for business purposes within the system?

    How right the comments are of Dr. Fung HRT. Look at ones mother, grandmother, great grandmother, did they take HRT or other drugs? Not many if any I am sure, why, menopause is a natural situation of the body, as I understand not a doctor, but years ago, a woman let the body do its own work. Personally, I did not even notice if I had a menopause, had not symptoms whatsoever, in wonderment why my friends were complaining, having issues, problems with HRT, indicates the person who did not take medication whatsoever, simply allowed ones body to do what come naturally at a certain age, breezed through menopause thinking "did I go through menopause or not"?

    The question remains, how many medications are we prescribed unnecessarily perhaps, just for vested interests, not to say all those out there who are share holders in pharma industry?

    Hold as always Dr. Fung in highest esteem for his down to earth, clear speaking information provided at all times. Thank you Dr. Fung.

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