Those who drink at least 10 cups a day have a lower risk of contracting the Parkinson disease.
A 22-year long Finnish study of 6710 people, aged 50 or more, confirms this.
A hundred and one people got the disease that is due to a lack of dopamine and which causes shivers, stiffness and slowness.
The researchers have two theories: either the caffeine protects the dopamine cells or the effects are due to the polyphenols which have an anti oxidizing effect and would that way protect the cells for a longer time.