Vitamin D Deficiency In Your 30s And 40s Could Affect Dementia Risk Years Later

Vitamin D deficiency has long been associated with a higher risk of dementia, though that link doesn’t necessarily prove causality. 

A new study published in Neurology, however, followed 800 people over 16 years. 

They found that people who had higher vitamin D levels in their 30s and 40s tended to have lower levels of tau protein in later life. 

Tau “tangles” have been linked to dementia. 

Vitamin D deficiency, which can only be confirmed for sure with a blood test, is believed to affect about one in six UK adults.

Why...