Why is UV light so bad for human skin?



  1. 0 Votes

    Both UV-A and UV-B rays (in which the distinction is based on the wavelength of each type of radiation) damage DNA in several layers of the skin and they alter the amounts and types of chemicals generated by skin cells. These effects cause skin burning, premature skin aging, wrinkling, and skin cancer.

  2. 0 Votes

    Ultraviolet light, both UV-A and UV-B rays, are normally absorbed and converted to heat energy by the chemical melanin in the body. Melanocytes, which create melanin, are damaged when more UV is absorbed than the melanin can handle. The DNA of the skin cells is affected, and enzymes are released to repair the damage. Unfortunately, they are not always able to fix the DNA and mutations are more likely to occur, increasing the risk for cancer.

    UV light can also have many other negative effects in addition to skin cancer, which are more visible. Wrinkles, loss of elasticity, sun spots, and toughening of the skin can occur. Although not your skin, exposure can also result in cataracts in the eyes, which should be protected with sunglasses.

Please signup or login to answer this question.

Sorry,At this time user registration is disabled. We will open registration soon!