Supports Chapter 11: Our irrational fear of sunlight, and Chapter 26: Diet and the brain
A study by researchers at Emory University School of Medicine published in October 2008 compared the amount of vitamin D, which we get from sunlight, and the prevalence of Parkinson's and Alzheimer's diseases with the amounts of vitamin D in healthy people. The study was over a 15-year period.
What it found was that people suffering these two distressing and debilitating diseases was that they had significantly lower levels of vitamin D than healthy people.
Although the researchers call for more research to be done, it has really been quite obvious for some years that one aspect of prevention of these diseases is to get out in the sun as much as possible. This is particularly important if you live in higher latitudes such as northern Europe, the northern states of the US or Canada. This new study adds weight to what I wrote in Trick and Treat.
Evatt ML, et al .Prevalence of Vitamin D Insufficiency in Patients With Parkinson Disease and Alzheimer Disease. Arch Neurol. 2008;65:1348-1352.