Negative messages about the sun and skin cancer, even tanning, have scared people into staying indoors or covering up at all times when going outdoors, to the point where the body is unable to reap the benefits of sunshine and UV exposure.

Source: https://myemail.constantcontact.com/How-Sunshine-has-Helped-Us-Heal-throughout-History.html?soid=1102722411090&aid=pvU2xOo48ZU