“Human skin is the outermost part of the body. With a surface area of skin between about 1.6 square meters for a woman to 1.8 square meters for a man, make the skin become the largest organ in the human body and spacious. However, the skin can be damaged, especially by the sun. Sunlight on the skin can cause skin cancer. The extent to which harmful sun rays to the skin? How to protect your skin from dangerous sun rays?”
The sun is essential to life. Without the sun, there is no life on earth. Sun contribute to the process of photosynthesis in plants. In addition, the sun also acts to stimulate the body to produce vitamin D, which serves to make the process of calcium metabolism, thus forming strong bones.
Sunlight, if a little is beneficial for the body. However, excessive sunlight can be harmful to the skin. Even the hazard can increase with increasing number of rays on the skin. Why?
The sun produces radiation that reaches the earth’s surface. Solar radiation is composed of infrared rays and visible light and ultraviolet light within a radius of A and B (UVA and UVB). Fortunately, the atmosphere absorbs cosmic rays, gamma rays and X-ray beam produced by the sun. In addition, the ozone layer in the atmosphere also inhibits ultraviolet radiation C (UVC) and filter out most of the UVA and UVB. Unfortunately, the ozone layer is being damaged at various places so that ultraviolet radiation is often called UV has increased lately.
Ultraviolet or UV radiation can cause skin damage, even permanent skin damage including skin cancer. Ultraviolet radiation (UV) can cause your skin to burn, and cause brown spots and thickening and dryness of the skin. UV radiation can damage DNA, suppress immunity, and activate the chemicals in the body that can cause cancer. Another negative effect is premature aging. Even later revealed that UVA radiation penetrates the skin deeper than UVB, which can cause skin cancer, and may suppress the immune system.
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