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.
The types of peptic ulcers are gastric and duodenal, both of which are chronic diseases. The ulcer represents the development of a circumscribed defect in the gastric or duodenal mucosa that is exposed to acid and pepsin secretion. The ulcer may extend through the tissue layers of the muscle and serosa into the abdominal cavity.