The Ra Optics Blog
Can I get vitamin D on a cloudy day?
The synthesis of vitamin D is triggered by skin exposure to ultraviolet light. Even on a cloudy day, the level of ultraviolet light is sufficient enough to activate this response.
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Can you get vitamin D through a window?
Increasing your vitamin D levels is critical to strong bones and overall health. Sunlight is your best source but most glass windows filter out UVB, so sitting near a sunny window is not going to help you.
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How to get Vitamin D – the most effective way
Vitamin D is needed for strong bones, immunity, and prevention of many chronic diseases. The sun is the best source of this nutrient, particularly Ultraviolet light (UV), triggering the synthesis of vitamin D. We need it daily for the best results.
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