Obesity is a clinical term for excess body weight. It is generally applied to a person who is 20%to 30% or more above a so-called standard weight, usually displayed in weight –height tables. These tables, which were developed a number of years ago from data, obtained from life insurance policy holders, Thus they tell us very little about anyone real particular individual of concern. The problem lies in trying to define this use of word standard. This term is usually defined in reference to average weight according to height and frame, but even this is not much help because an average person does not really exist. Every person is a unique and complex human being and normal values in healthy persons vary over a relatively wide range. Age plays a large role in the variance.
BODY WEIGHT VS BODY FAT
The term overweight is often used a synonym for obesity, but these two terms are not interchangeable. The distinction is important. For example a football player in peak condition can be greatly overweight, according to standard weight height charts. That is, he can weigh considerably more than the average man of the same height, but much of his greater weight is not fat at all. In clinical usage the term overweight refers to person with body weight in access of the weight height standard but below the 20% access designated as obesity. In relation to health however the term over fat is a more correct designation because it refers to the percentage of excess of body fat frequently resulting is significant impairment of health