We're finally realizing that we actually do need some sun on our skins - and a new study has found that we need even more of it as we get older.
Sunshine is the very best source of vitamin D, and it seems our natural levels fall as we get older, possibly because of the ageing process and also because we perhaps don't go outside quite so often.
Low levels of vitamin D can cause a condition known as metabolic syndrome, a combination of disorders that increases the risk for heart disease and diabetes.
A study of 3,262 people aged between 50 and 70 years found that 94 per cent had low vitamin D levels, and 42 per cent had metabolic syndrome.
Study team leader Dr Oscar Franco from Warwick Medical School says vitamin D deficiency could be a global health problem.
(Source: Diabetes Care, April 14, 2009. doi: 10.2337/dc09-0209).