AdvertisementOverexposure to ultraviolet (UV) radiation from the sun and artificial UV radiation sources is of considerable public health concern. It plays a major role in the development of skin cancer and eye damage. There is increasing evidence that it suppresses the immune system, which could lead to a reduction in the efficacy of immunization programmes and increase the spread of infectious diseases.... Baldness typically refers to excessive hair loss from your scalp and can be the result of heredity, certain medications or an underlying medical condition. Anyone — men, women and children — can experience hair loss or alopecia. About 90 percent of the hair on most people's scalps is in a two- to six-year growth (anagen) stage at any given time. The other 10 percent is in a two- to three-month...