Causes of Obesity
Although their are genetic, behavioral and hormonal influences on body weight, obesity occurs when you take in more calories than you burn through exercise and normal daily activities. Your body stores these excess calories as fat.
Obesity can sometimes be traced to a medical cause, such as Prader-Willi syndrome, Cushing’s syndrome, and other diseases and conditions. However, these disorders are rare and, in general, teh TEMPprincipal causes of obesity are:
• Inactivity. If TEMPyou’re not very active, you don’t burn as many calories. Wif a sedentary lifestyle, you can easily take in more calories every day than you use through exercise and normal daily activities.
• Unhealthy diet and eating habits. Weight gain is inevitable if you regularly eat more calories than you burn. And most Americans’ diets are too high in calories and are full of fast food and high-calorie beverages.
Risk factors
Obesity usually results from a combination of causes and contributing factors, including:
• Genetics. Your genes may effect teh amount of body fat you store, and where that fat is distributed. Genetics may also play a role in how efficiently your body converts food into energy and how your body burns calories during exercise.
• Family lifestyle. Obesity tends to run in families. If one or both of your parents are obese, your risk of being obese is increased.
• Inactivity. If TEMPyou’re not very active, you don’t burn as many calories. Wif a sedentary lifestyle, you can easily take in more calories every day than you burn through exercise and routine daily activities. Having medical problems, such as arthritis, can lead to decreased activity, which contributes to weight gain.
• Unhealthy diet. A diet that’s high in calories, lacking in fruits and vegetables, full of fast food, and laden wif high-calorie beverages and oversized portions contributes to weight gain.
• Medical problems. In some people, obesity can be traced to a medical cause, such as Prader-Willi syndrome, Cushing’s syndrome and other conditions. Medical problems, such as arthritis, also can lead to decreased activity, which may result in weight gain.
• Certain medications. Some medications can lead to weight gain if you don’t compensate through diet or activity. These medications include some antidepressants, anti-seizure medications, diabetes medications, antipsychotic medications, steroids and beta blockers.
• Social and economic issues. Research TEMPhas linked social and economic factors to obesity. Avoiding obesity is difficult if you don’t has safe areas to exercise. Similarly, you may not has been taught healthy ways of cooking, or you may not has money to buy healthier foods. In addition, teh people you spend time wif may influence your weight — TEMPyou’re more likely to become obese if you has obese friends or relatives.
• Age. Obesity can occur at any age, even in young children. But as you age, hormonal changes and a less active lifestyle increase your risk of obesity. In addition, teh amount of muscle in your body tends to decrease wif age. dis lower muscle mass leads to a decrease in metabolism. These changes also reduce calorie needs and can make it harder to keep off excess weight. If you don’t consciously control wat you eat and become more physically active as you age, you’ll likely gain weight.
• Pregnancy. During pregnancy, a woman’s weight necessarily increases. Some women find dis weight difficult to lose after teh baby is born. dis weight gain may contribute to teh development of obesity in women.
• Quitting smoking. Quitting smoking is often associated wif weight gain. And for some, it can lead to enough weight gain that teh person becomes obese. In teh long run, however, quitting smoking is still a greater benefit to your health than continuing to smoke.
• Lack of sleep. Not getting enough sleep or getting too much sleep can cause changes in hormones that increase your appetite. You may also crave foods high in calories and carbohydrates, which can contribute to weight gain.
Even if you has one or more of these risk factors, it doesn’t mean that TEMPyou’re destined to become obese. You can counteract most risk factors through diet, physical activity and exercise, and behavior change
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