Positive and negative effects of UV
Earth's atmosphere blocks 98.7% of UV rays enter the atmosphere. 2.3% received both positive and negative.
The positive effects (beneficial) UV
Triggers vitamin D - UV sunlight is necessary for our body to produce vitamin D. Vitamin D helps strengthen bones, muscles and immune system of the body. You can also reduce the risk of certain...
Position Statement The Risks and Benefits of Sun Exposure
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