Further evidence points to the association between vitamin D deficiency and dementia risk. People over 65 with severe vitamin D deficiency have double the anticipated risk of developing dementia.
Further research is needed to clarify the public health implications.
Low vitamin D ‘boosts dementia risk’. London: BBC Health News, August 7th 2014.
The following NHS Choices Behind the Headlines appraisal explains this research further:
Lack of vitamin D may ‘raise dementia risk’. London: NHS Choices Behind the Headlines, August 7th 2014.
This relates to:
Littlejohns, TJ. Henley, WE. [and] Lang, IA. [et al] (2014). Vitamin D and the risk of dementia and Alzheimer disease. Neurology. September 2nd 2014; 83(10): 920-8.
Possibly of interest (although not connected directly):
Everyone ‘should take vitamin D pills’. London: BBC Health News, August 3rd 2015.