Both drugs had been previously recommended for approval 14-0 by members of FDA's Anti-Infective Drugs Advisory Committee. The significance of two new antibiotics in four weeks? We've recently been averaging one antibiotic every three years.
Skin color is due primarily to the presence of a pigment called melanin, which is controlled by at least 6 genes. Both light and dark complexioned people have melanin. However, two forms are produced--pheomelanin, which is red to yellow in color, and eumelanin, which is dark brown to black.
Two kinds of melanin determine hair color: eumelanin produces black to brown hair and pheomelanin produces yellow to red hair. Causes of premature graying include stress, illness, excessive drinking of tea, coffee and alcohol and eating too much fried, oily, spicy, sour and acidic foods. older woman with gray hair.