The future just got brighter, thanks to the sunshine vitamin. Scientists in Ireland have added to a growing stack of research on the relationship between vitamin D levels in the blood and a possible lower risk of dementia . A 16-year study found that higher vitamin D intake during middle age could have something to do with the level of tau protein deposits in the brain — a key indicator of dementia — in old age. Nearly 800 dementia-free participants were recruited for the study, with an average