What harm does ultraviolet light do to human body?

Ultraviolet rays are harmful to people's health.

Excessive ultraviolet radiation mainly causes skin damage such as sunburn, sunburn and photoaging. Long-term exposure to ultraviolet A and ultraviolet B may be one of the causes of eye diseases such as cataract, macular degeneration and keratitis. Even if there is no direct sunlight, ultraviolet rays invisible to the naked eye still exist, which will do some harm to eye health.

Gong, deputy director of the Laser Physiotherapy Department of Guangzhou Institute of Dermatology and Prevention, said that improper ultraviolet irradiation can lead to skin aging, wrinkles and even skin cancer and lupus erythematosus.

Medium-wave and long-wave ultraviolet rays can not only cause skin tanning, but also directly reach the dermis of the skin, destroying collagen and elastic fibers, leading to photoaging, and this effect can be superimposed and accumulated, leading to lasting tanning and aging of the skin.

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