Why Do People Need Sunshine?

In the skin there is a kind of cholesterol which can turn into Vitamin D under ultraviolet ray irradiation. Vitamin D is required for normal bone growth so that children will not get rickets. So children should go out to play in the sun. Sunshine is also good for preventing some skin diseases . However, too much sunshine can cause heatstroke or some skin cancers, so -a sunscreen lotion and a hat should be used if people are in the sun a lot, especially if the people have light skin, hair and eyes.