This point is made crystal clear even when we take a look back over the last few years. According to the National Sleep Foundation (NSF), a U.S. nonprofit organization of researchers, patients and health-care facilities, 20% of Americans reported getting six hours of sleep or less in 2009, compared to 13% in 2001.
An ulcer (/ËÊlsÉr/; from Latin ulcus, ulcer, sore) is a break in the skin or mucous membrane with loss of surface tissue and the disintegration and necrosis of epithelial tissue. A mucosal ulcer is an ulcer which specifically occurs on a mucous membrane.
A peptic ulcer is a sore in the inner lining of the stomach or upper small intestine . Ulcers form when the intestine or stomach's protective layer is broken down. When this happens, digestive juices-which contain hydrochloric acid and an enzyme called pepsin-can damage the intestine or stomach tissue. Treatment cures most ulcers. And symptoms usually go away quickly. Peptic ulcers that form in the stomach are called gastric ulcers. Those that form in the upper small intestine are called duodenal (say doo-uh-DEE-nul or doo-AW-duh-nul) ulcers.