The term overweight means that a person has more boy fat (adipose tissue) than is optimally healthy. Being overweight is a common condition, especially where food supplies are plentiful and lifestyles are sedentary. As much as 64% of the United States adult population is considered overweight, and this percentage is increasing. A series of graphics from the Centers for Disease Control and Prevention (CDC) shows the trend in which the prevalence of obesity has increased in the U.S. during the past two decades: Obesity Epidemic: U.S. Temporal Trends 1985-2004