Vitamin D Deficiency Among Seniors Linked To Cognitive Decline

A U.S. study adds to the mounting evidence that vitamin D deficiency in seniors is associated with cognitive decline over time. The researchers looked at 2,777 well-functioning adults aged 70 to 79 whose cognitive performance was measured at the start of the study and again four years later. Vitamin D levels were measured at the 12-month follow-up visit. Low vitamin D was associated with worse cognitive performance on one of the two cognitive tests used. The researchers were careful to point out they could not determine a direct cause-and-effect relationship, but there was enough associative data to support a campaign to increase vitamin D supplementation among the elderly.