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sports, associated with a proper diet , is the best way to prevent or curb the state of overweight, at high levels, obesity is defined and is a serious risk to health.

in Italy is estimated that over 4 million people , between adults and children who are in situations of obesity. It 's a very debilitating situation, which raises the risk of contracting cardiovascular disease and insulin resistance . The very overweight can cause hypertension, tendency to sodium retention and hypercholesterolemia. We identify

in regular physical activity, and control the share of calories taken with food, the first and most effective lines of resolution of the problem because only a small percentage of obese, has genetic causes or metabolic disorders that determine their weight.
E 'possible to distinguish two types of obesity: android (typical male and that, moreover, increasing their exposure to risk) and gynoid (characteristic of females). The
adipose tissue consists of cells white and brown cells.

white cells tend to replace the cells with brown over time, can accumulate more fat and have the ability to secrete TNF and cytokines .
brown cells are particularly distributed in subjects exposed to low temperatures in neonates. The "brown fat" is richly vascularized, and is localized mainly at the gut level.

Another feature of adipose tissue is the ability to produce leptin, a protein able to act on the hypothalamus by limiting the sense of hunger. Its output is proportional to the presence of body fat. However, often, it creates a form of leptin resistance that dramatically reduces its effectiveness. In the early stages of the production of weight loss Leptin tow and this could partly explain the increase in hunger. On the other receptors in the hypothalamus are more sensitive to its decline than to its increase.

The hypothalamus is also influenced by that ghrelin stimulates it to increase the desire to eat, and is a protein, especially present in individuals with low-calorie diet.
These mechanisms of "defense" of the body, apart from the sociological implications, are easy to understand that a very restrictive diet (crash dieting), in addition to setting out potential risks, is hardly sustainable in the long run.

Therefore, the situation di equilibrio ideale, risiede nella corretta alimentazione (e non nella temporanea sottoalimentazione) associata ad uno stile di vita attivo.

Tratto da: A scuola di fitness , di Pierluigi De Pascalis, Ed. Calzetti Mariucc