Most Parkinson's disease sufferers are seriously depleted in levels of vitamin D, which we mainly get from the sun, researchers have discovered - so does this mean that you are more likely to develop the disease if you don't get out into the sun often enough?
The researchers made the discovery when they compared vitamin D levels of sufferers of Parkinson's, and Alzheimer's disease, and with healthy subjects. Around 55 per cent of Parkinson's sufferers had very low levels of the vitamin compared to 35 per cent of the healthy controls.
If you live in a Northern clime where sunshine isn't a daily feature, you can also increase your levels of vitamin D by eating more oily fish and eggs.
(Source: Archives of Neurology, 2008; 65: 1348-52).