Health lecture courseware of calcium

I haven't heard of the theory of light calcium supplement. Most people supplement calcium by themselves and then bask in the sun. The ultraviolet rays in the sun are in VB band, and the wavelength is 275 ~ 320 nm, which is also called ultraviolet rays with medium wave erythema effect. It can promote mineral metabolism and the formation of vitamin D in the body, which is a gift given by nature to human beings. As long as it is taken naturally during the day, long-term or excessive exposure will make the skin tan, causing redness and peeling.

Artificial lighting calcium supplement instrument is nothing more than providing ultraviolet light made of special ultraviolet transparent glass (opaque below 254nm) and fluorescent powder with a peak value of about 300nm. Ultraviolet health lamp and plant growth lamp are made of special ultraviolet transparent glass (opaque below 254nm) and fluorescent powder with a peak value of about 300nm. No harm to the human body, just be careful not to use it overtime according to the regulations, which will cause certain harm to the skin.

-Child nutritionist's point of view