5 - 10 minutes in the sun can help a little with type 2 diabetes:
"Regular exercise in the Australian sunshine could provide a double benefit for warding off type 2 diabetes.
Not only was this positive for overall health and keeping trim, Dr Jenny Gunton said the dose of vitamin D it provided could also help to prevent the disease.
"There's a lot of circumstantial evidence to suggest that vitamin D might play a role in type 2 diabetes," Dr Gunton, from Sydney's Garvan Institute, told AAP on Monday.
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"If you have low levels you are more likely to develop diabetes in the future, and people with diabetes are more likely to have low levels.
"But that doesn't tell us whether it causes diabetes ... You could equally argue that people with diabetes do less exercise and so that's why they have less vitamin D.""
read more here: http://news.theage.com.au/breaking-news-national/sun-exposure-link-to-ty...