Melanin: Aging of the Skin and Skin Cancer "Ultraviolet (UV) radiation is responsible for 90% of the visible signs of aging on the skin of whites," says Dr. Michael J. Martin, former Assistant Clinical Professor in the Dept. of Epidemiology and Biostatistics at University of California, San Francisco. Blacks' skin, however, ages much slower. Why are most dark-skinned blacks protected from harmful UV rays? Because compared to whites, blacks possess more melanin, the pigment that gives skin its color. Melanin Melanin offers protection against UV rays for blacks and other dark-skinned people. Conversely, fair-sk ... Author: Diana Clarke CLICK HERE TO READ THE REST OF THIS ARTICLE Additional Navigation: Genetics: 1 2 3 4 5 Engineering Diseases Genetic Testing DNA Testing 1 Genomes Gene Therapy 1 RNA 1 Chromosomes Cloning 1 2 3 Misc Stem Cells 1 2

Today's Featured Articles: Celtic Wedding Rituals -- "Tying the knot" One of the most elegant rituals you can choose for a wedding is the traditional Celtic hand fasting. After the vows, the bride and groom's wrists are bound together with five colored ribbons, each symbolizing an aspect of marriage and their shared commitment. It is a long standing Celtic tradition that is still quite popular, and happens to be the origin of the expression "tying the knot" which has grown to mean getting married. Though this tradition is a lovely and meaningful tradition, many other Celtic wedding traditions have not aged as gracefully. All marriages start with a propo ... Author: Andrea Britt CLICK HERE TO READ THE REST OF THIS ARTICLE Why Are Antioxidants Important To Me? Did you know that when we breath oxygen, it interacts with certain molecules in our bodies to create free radicals and that these free radicals damage important cellular structures such as DNA and cell membranes? Well, it is true and this damage may cause cells to function poorly and mutate. Free radical damage may lead to disease and aging. We are exposed to huge amounts of free radicals from pollution, and pesticides. Every time you breathe, you take in millions of free radical molecules created by cigarette smoke, radiation, and automobile emissions. Every time you eat, you consume ... Author: Scarlet S. Paolicchi CLICK HERE TO READ THE REST OF THIS ARTICLE Want to read more of our articles?  Check out the Archive. Article Archive: Pages 1 2 3 4 5 6 7 8 9 10 11 12 13