Depending on your skin type, your body will produce between 1,000 and 10,000 international units (IUs) of vitamin D when exposed to 30 minutes of the mid-day sun. This is important because vitamin D deficiency has been linked to weak bones, insomnia, mood disorders, hormonal imbalances and more. But too much of anything can be bad, and sun exposure is no exception.
Sun Exposure and Skin Cancer
According to the American Academy of Dermatology (AAD), skin cancer is the single most common type of cancer, with roughly one in five Americans developing it at some point during their life. A leading contributing factor of skin cancer is sun exposure. Sunlight contains ultraviolet (UV) rays that penetrate the skin and promote abnormal cell growth. Statistics show that up to 90 percent of all non-melanoma skin cancers involve prolonged exposure to the sun.