Over 60s should take vitamin D supplements to ward off cognitive decline and dementia, scientists have advised, after a study showed those with deficiencies suffered rapid mental deterioration.
Known as the sunshine vitamin because the body produces it when in contact with sunlight, vitamin D is essential for promoting calcium absorption and bone health and some studies suggest it may protect against cancer, diabetes and multiple sclerosis.
But new research suggests it also plays an important role in mental health in later life.
Scientists at the University of California and Rutgers University in the US found that over-60s with vitamin D deficiency declined mentally at a rate three times faster than those with adequate levels.