A sugar pill with zero active ingredients can trigger your brain to release real painkillers, and in the US this effect has nearly tripled since 1990
I keep thinking about this and I still do not fully know what to do with it.
In 2015 a team at McGill University went through 84 clinical trials for pain medication conducted between 1990 and 2013. What they found was that in 1996 the actual drugs in those trials relieved pain 27% more than a placebo. By 2013 that gap had shrunk to 9%. The drugs did not get weaker. The sugar pills got stronger.
Let that land for a second. People who were given a pill with literally nothing in it, no active ingredient, no medicine, no anything, were experiencing dramatically more pain relief in 2013 than people given the same kind of fake pill in 1996. And brain scans showed these were not people just saying they felt better to be polite. Their brains were releasing real endorphins. Real dopamine. The same chemicals the actual drugs were designed to trigger.
More than 90% of new painkillers developed in the US have failed their final clinical trials in the last decade. Not because the drugs do not work, but because the placebo group keeps getting better results and the drug can no longer prove it is superior to nothing.
Here is the part that nobody can fully explain. This is only happening in the United States. Trials in Europe and Asia are not showing the same trend. Some researchers think it is because the US is one of only two countries that allows pharmaceutical companies to advertise directly to consumers, which raises expectations. Others think it is because US trials have gotten longer and more elaborate, with more personal attention from staff, and all of that care itself does something. But none of these explanations fully account for the scale of the change.
What sits with me is what this actually means at a basic level. Your body can produce its own pharmacy. It can manufacture real chemical responses based on nothing more than the expectation that something is going to help. Not a little. Enough to rival the performance of drugs that cost billions to develop.
And somehow this ability is getting stronger over time.
Study:
PubMed
https://pubmed.ncbi.nlm.nih.gov/26307858/
ScienceDaily
https://www.sciencedaily.com/releases/2015/10/151006142418.htm