Why can't calcium supplement in the sun in the glass?
27 years old
2018-06-27
It is hotter in summer and colder in winter. If you want to enjoy the sun, you can only stay indoors. So why can't you add calcium through the glass?
1 Answer These messages are for reference only
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BY Penelope Judson 2018-06-27Let's put it this way, the ultraviolet rays in sunlight are divided into ultraviolet A, ultraviolet B and ultraviolet C. Ultraviolet C is almost absorbed by the ozone layer, which has little effect on us. Ultraviolet A has strong penetrating power and can penetrate most transparent glass and plastics. Most of the ultraviolet B is absorbed by the ozone layer, only less than 2％ can reach the surface of the earth, its penetration is not strong, it will be absorbed by transparent glass, but ultraviolet B can promote the metabolism of minerals and the formation of vitamin D in the body, so the Sunbathing in glass does not promote calcium absorption.7
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