sharingwisdom
04-22-2011, 05:50 PM
https://www.newsweek.com/2011/01/23/why-almost-everything-you-hear-about-medic... (https://www.newsweek.com/2011/01/23/why-almost-everything-you-hear-about-medicine-is-wrong.html)
If you follow the news about health research, you risk whiplash. First garlic lowers bad cholesterol, then—after more study—it doesn’t. Hormone replacement reduces the risk of heart disease in postmenopausal women, until a huge study finds that it doesn’t. But what if wrong answers aren’t the exception but the rule? More and more scholars who scrutinize health research are now making that claim.
It isn’t just an individual study here and there that’s flawed, they charge. Instead, the very framework of medical investigation may be off-kilter, leading time and again to findings that are at best unproved and at worst dangerously wrong. The result is a system that leads patients and physicians astray—spurring often costly regimens that won’t help and may even harm you. Even a cursory glance at medical journals shows that once heralded studies keep falling by the wayside.
A major study concluded there’s no good evidence that statins (drugs like Lipitor and Crestor) help people with no history of heart disease. The study ... was based on an evaluation of 14 individual trials with 34,272 patients. Cost of statins: more than $20 billion per year. “Positive” drug trials, which find that a treatment is effective, and “negative” trials, in which a drug fails, take the same amount of time to conduct.
But negative trials took an extra two to four years to be published. With billions of dollars on the line, companies are loath to declare a new drug ineffective. As a result of the lag in publishing negative studies, patients receive a treatment that is actually ineffective. From clinical trials of new drugs to cutting-edge genetics, biomedical research is riddled with incorrect findings.
If you follow the news about health research, you risk whiplash. First garlic lowers bad cholesterol, then—after more study—it doesn’t. Hormone replacement reduces the risk of heart disease in postmenopausal women, until a huge study finds that it doesn’t. But what if wrong answers aren’t the exception but the rule? More and more scholars who scrutinize health research are now making that claim.
It isn’t just an individual study here and there that’s flawed, they charge. Instead, the very framework of medical investigation may be off-kilter, leading time and again to findings that are at best unproved and at worst dangerously wrong. The result is a system that leads patients and physicians astray—spurring often costly regimens that won’t help and may even harm you. Even a cursory glance at medical journals shows that once heralded studies keep falling by the wayside.
A major study concluded there’s no good evidence that statins (drugs like Lipitor and Crestor) help people with no history of heart disease. The study ... was based on an evaluation of 14 individual trials with 34,272 patients. Cost of statins: more than $20 billion per year. “Positive” drug trials, which find that a treatment is effective, and “negative” trials, in which a drug fails, take the same amount of time to conduct.
But negative trials took an extra two to four years to be published. With billions of dollars on the line, companies are loath to declare a new drug ineffective. As a result of the lag in publishing negative studies, patients receive a treatment that is actually ineffective. From clinical trials of new drugs to cutting-edge genetics, biomedical research is riddled with incorrect findings.