Dr. David Scott Overstreet M.D.

Developing gray hair is inevitable in everyone's life time. "The color of the hair changes when the pigment-producing cells stops the production of the pigment," says Jeffrey Benabio, MD, a dermatologist at Kaiser Permanente in San Diego. The color may also be bleached by the build up of naturally...

Listeriosis is a foodborne disease caused by the infection of the bacteria Listeria monocytogenes. This infection may cause severe symptoms in pregnant women and people who have a weak immune system. It may also affect newborns and the elderly. The symptoms are generally not very serious in the case...

Hiccups refer to the sudden spasms of the diaphragm, the muscle present at the base of the lungs that separates the chest and abdomen. These spasms result in the closure of the vocal cords, which produces the characteristic ‘hic’ sound of hiccups. Fortunately these bothersome contractions are...

When a body doesn’t have sufficient fluids, it becomes dehydrated. Although dehydration mostly occurs during warm seasons when people work outdoors and don’t drink plenty of water, it can also happen in various situations and can be very dangerous or even fatal. Dehydration occurs in three...

Background noise from the TV, when we leave it on without watching it, may affect young children, reports a new study. The study also reports that children in U.S. are exposed to an average of four hours of background noise from the TV. The results from the study were presented in the International...

IntroductionWhen people say salt, they usually mean the common table salt. Salt is a mineral that is mainly composed of sodium chloride (NaCl). To distinguish table salt from a class of chemical compounds called salts, the terms rock salt or the mineral name halite is used. Sodium is also...