by Guest » Mon Aug 15, 2005 3:12 am
AGAINST DEPRESSION, A SUGAR PILL IS HARD TO BEAT.
"After thousands of studies, hundreds of millions of prescriptions and tens of billions of dollars in sales, two things are certain about pills that treat depression: Antidepressants like Prozac, Paxil and Zoloft work. And so do sugar pills.
A new analysis has found that in the majority of trials conducted by drug companies in recent decades, sugar pills have done as well as -- or better than -- antidepressants. Companies have had to conduct numerous trials to get two that show a positive result, which is the Food and Drug Administration's minimum for approval.
What's more, the sugar pills, or placebos, cause profound changes in the same areas of the brain affected by the medicines, according to research published last week. One researcher has ruefully concluded that a higher percentage of depressed patients get better on placebos today than 20 years ago.
Placebos -- or dud pills -- have long been used to help scientists separate the "real" effectiveness of medicines from the "illusory" feelings of patients. The placebo effect -- the phenomenon of patients feeling better after they've been treated with dud pills -- is seen throughout the field of medicine. But new research suggests that the placebo may play an extraordinary role in the treatment of depression -- where how people feel spells the difference between sickness and health.
The new research may shed light on findings such as those from a trial last month that compared the herbal remedy St. John's wort against Zoloft. St. John's wort fully cured 24 percent of the depressed people who received it, and Zoloft cured 25 percent -- but the placebo fully cured 32 percent."
Against Depression, a Sugar Pill Is Hard to Beat (washingtonpost.com)