Cancer occurrence rates in a period of time for a given population is expressed in various ways. The incidence rate is a direct measure of the probability of developing cancer and is usually expressed per year. Incidence rates may be crude (all ages) or age specific. Since cancer is very age dependent, age specific rates are usually more informative. Cancer in elderly is more prevalent compare to cancer in younger age. When comparing population groups with different age distributions (such as the United States vs. China), the incidence rate should be age adjusted by multiplying each age-specific rate by the percent of individuals in a population with the same ages and then summing these to produce a single value. For etiological studies, incidence rates tend to be more informative than mortality rates, as they identify all diagnosed cases. (more…)

Obesity in the elderly is a major health crisis facing our population that may predispose the elderly to the same adverse health outcomes facing the younger, obese population. However, several studies have suggested that the risk of obesity on life span is less in the elderly and may even become insignificant. However, these studies have found an increase in disability in older subjects with obesity. (more…)

Some researches on relation between exercise and body human health results indicate that in addition to increasing muscle capacity, physical activity can help improve strength, balance, joint mobility, flexibility, agility, the speed with which one walks and physical coordination as a whole. In addition, physical activity has effects favorably on metabolism, blood pressure regulation, and prevention of an excessive increase in weight. (more…)

Alcohol abuse can be defined as individuals drink more than normal quantity but on regular basis. This habits causes poor health to that person and pose danger to himself or others. Alcohol abusers are usually manage to set limits and measure himself to control over drinking habits. Most of the time, these person listen to family and friends who express concern and give suggestion to stop this alcohol abuse habit. In the more progress scale, alcohol abuse (more…)

Chronic diseases are not generally prevented by vaccines or cured by medication, nor do they just disappear. To a large degree, the major chronic disease killers—heart disease, cancer, stroke, and diabetes—are an extension of what people do, or not do, as they go about their daily lives. (more…)