Ronald B Postuma

There's even a real prescription medication that works exactly this way.

So there was a research team in Canada, led by Dr. Ronald Postuma, that decided to actually test it.

And here's what they did.

121 people who had Parkinson's for about four years on average, half of them took a 200 milligram caffeine pill twice a day, about the caffeine in three cups of coffee, and the other half got the placebo or the fake pill.