Friday, 11 May 2018

SUNLIGHT AND CANCER OF THE SKIN





The sun's rays make us feel good, and in the short term, make us look good. But what most people do not know is the long term effects of this short pleasure. Sun exposure causes most of the wrinkles and age spots on our faces. One who is less exposed to sun or protects his skin from direct sunlight actually looks way younger than his mates of same age bracket.

We often associate a glowing complexion with good health, but skin color obtained from being in the sun – or in a tanning booth – actually accelerates the effects of aging and increases your risk for developing skin cancer.
Sun exposure causes most of the skin changes that we think of as a normal part of aging. Over a long time, the sun's ultraviolet (UV) light damages the fibers in the skin. These fibres are called elastin. When these fibers break down or gets damaged, the skin begins to sag, stretch, and lose its ability to return to shape after stretching. The skin also bruises and tears more easily, taking longer time to heal. So while sun damage to the skin may not be apparent when you're young, it will definitely show later in life.

EFFECTS OF SUN TO THE SKIN:
Exposure to the sun causes:
  • Pre-cancerous and cancerous skin lesions - due to decreases in the skin's immune function
  • Benign tumors
  • Fine and coarse wrinkles
  • Freckles
  • Discolored areas of the skin, called mottled pigmentation
  • Sallowness -- a yellow discoloration of the skin
  • Telangiectasias -- the dilation of small blood vessels under the skin
  • Elastosis -- the destruction of the elastic and collagen tissue (causing lines, wrinkles and sagging skin)

 

SKIN CANCER:

Skin cancer is the most prevalent form of all cancers in the world and the number of cases continues to rise. Skin cancer can be simply explained as the uncontrolled growth of abnormal skin cells. This rapid growth results in tumors, which are either non-cancerous or cancerous.
Ultraviolet (UV) radiation from the sun is the number-one cause of skin cancer, but UV light from tanning beds is just as harmful. Exposure to sunlight during the winter months puts you at the same risk as exposure during the summertime, because UV rays are present in daylight.

 

WHO IS AT RISK FOR SKIN CANCER?

Anyone can get skin cancer, but some people have a higher risk to get it. The risk is greatest for people who have fair or freckled skin that burns easily, light eyes and blond or red hair. Darker skinned individuals are also susceptible to all types of skin cancer, although their risk is substantially lower.
Aside from complexion, other risk factors include having a family history or personal history of skin cancer, having an outdoor job and living in a sunny climate.