Double-Blind Medicine Studies Proven to Accidentally Select for Drugs with Higher Side Effects
A new study published in the Journal of Clinical Pharmacology and Therapeutics has revealed a shocking flaw in the design of double-blind medicine studies, the gold standard for testing the efficacy and safety of new drugs.
According to the study, drugs that have more noticeable side effects, such as nausea, drowsiness, or headache, tend to induce a placebo effect on the study participants, as they assume they are receiving the active drug and not the placebo. This leads to an inflated perception of the drug’s benefits and a reduced reporting of its harms.
On the other hand, drugs that have slight or no side effects tend to induce a nocebo effect on the study participants, as they assume they are receiving the placebo and not the active drug. This leads to a diminished perception of the drug’s benefits and an increased reporting of its harms.
The researchers call this phenomenon the adverse placebo effect, and claim that it has skewed the results of many clinical trials, favoring drugs that have more side effects over drugs that have less or none.
“This is a serious problem that undermines the validity and reliability of double-blind medicine studies,” said Dr. Alice Jones, the lead author of the study. “We need to rethink how we design and conduct these studies, and find ways to minimize the influence of the adverse placebo effect.”
Dr. Jones suggested some possible solutions, such as using more objective measures of the drug’s effects, such as blood tests or brain scans, rather than relying on subjective reports from the participants. She also proposed using more sophisticated placebo pills that mimic some of the side effects of the active drug, such as sugar pills that cause mild stomach upset or caffeine pills that cause mild jitteriness.
However, she admitted that these solutions are not perfect, and that there is no easy way to eliminate the adverse placebo effect completely.
“We have to accept that there is no such thing as a perfect drug, or a perfect study,” she said. “We have to weigh the benefits and risks of each drug carefully, and not be fooled by the adverse placebo effect.”