- Vitamin D is a hormone that controls calcium levels in the blood. It is needed for strong bones, muscles and overall health.
- The sun’s ultraviolet radiation (UV) is the main cause of skin cancer and the best natural source of vitamin D.
- Vitamin D levels change naturally with the seasons. How much UV exposure a person needs depends on the time of year, UV levels, their skin type and their existing vitamin D levels.
- Being physically active outdoors will help make vitamin D.
- The body can only absorb a limited amount of vitamin D at a time. Spending extra time in the sun won’t increase vitamin D levels – but will increase your risk of skin cancer.
- Some people are at increased risk of low vitamin D – this includes people with naturally very dark skin and people who have very low exposure to sunlight.
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