Explained….the Reasons to Shield Your Skin From the Sun
Most of us love a day out in the sun, whether the beach, the countryside, or golf course. And why not? But hey, miss out one important factor, like skin protection, and you could be at risk from skin disease, the most serious being skin cancer.
Like most parts of our body, skin can develop cancer. Cancer is a result of an uncontrolled cell growth in one part of the body.
Unlike normal cells which are programmed to divide, grow, and die at a certain time, cancer cells lack the internal machinery to control growth and as a result cause severe damage to normal cells that will be outnumbered along the process in a certain biological locality. Some cells even detach from their point of origin and travel to other parts of the body to start a new colony of cancer cells.
Skin cancer is either melanoma or non-melanoma. Non-melanomas are cancers which arise from skin cells other than melanocyte cells. Melanomas are cancerous melanocyte cells that produce melanin, a pigment that gives the skin its characteristic color.
The sun is one of the key enemies of the skin. Light to moderate sun exposure is beneficial, as it helps the skin synthesize vitamin D (cholecalciferol), but excessive or lengthy exposure, and right, you’ve guessed it, skin damage, and unsightly wrinkles appear.
How does the sun cause such damage? Sunlight that passes through earth is composed of visible light and ultraviolet light (UV). UVA and UVB Light are one of the most common ultraviolet lights. UV lights cannot be detected with the naked human eye, and can only be seen with the aid of a sophisticated instrument, which works by measuring differing wavelengths of light across the light spectrum.
The two UV light factors differ in their capacity to cause irreparable skin damage. UVB light doesn’t get through the deeper layer of the skin and accounts for visible burns and DNA damage across the top layer of the skin.