It's all in your head.

It's all in your head. Parkinson's Disease is brought on by an absence of dopamine in the brain. Researchers doing a double-blind test with a dopamine precursor and a placebo discovered that the placebo stimulated the production of nearly as much dopamine as the drug. Weird.

The researchers found that in every patient, the placebo alone caused a substantial amount of dopamine to be released. "The interesting thing is, we are seeing a magnitude comparable to medication," says Stoessl.

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