Weight lossis a decrease in body weight resulting from either voluntary (diet,exercise) or involuntary (illness) circumstances. Most instances of weight loss arise due to the loss ofbody fat, but in cases of extreme or severe weight loss, protein and other substances in the body can also be depleted. Examples of involuntary weight loss include theweight loss associated withcancer,malabsorption (such as from chronic diarrheal illnesses ), and chronic inflammation (such as withrheumatoid arthritis).
Weight management refers to a setof practices and behaviors that are necessary to keep one’s weight at a healthful level. It is preferred to the term “dieting,” because it involves more than regulation of food intake or treatment of overweight people. People diagnosed with eating disorders who are not obese or overweight still need to practice weight management. Some health care professionals use the term”nutritional disorders” to cover all disorders related to weight.The term “weight management” also reflects a change in thinking about treatment of obesity and overweight during the past 20 years. Before 1980, treatment of overweight people focused on weight loss, with the goal of helpingthe patient reach an “ideal weight” as defined by standard life insurance height-weight charts. In recent years, however, researchers have discovered that most of the negative health consequences of obesity are improved or controlled by a relatively modest weight loss, perhaps as little as 10% of the patient’s body weight. It is not necessary for the person to reach the “ideal” weight to benefit from weight management. Some nutritionists refer to this treatmentgoal as the “10% solution.” Secondly, the fact that most obese people who lose large amounts of weight from reduced-calorie diets regain it within five years has led nutrition experts to emphasize weight management rather than weight loss as an appropriate outcome of treatment.
Physical fitness a state of physiologic well being that is achieved through a combination of good diet, regular physical exercise, and other practices that promote good health.
The activity of doing exercises (such as lifting weights) to make the muscles of your body larger and stronger.
Weight gain is an increase inbody weight. This can involve an increaseinmuscle mass,fat deposits, excessfluids such aswateror other factors.