OBESITY - the state of being grossly fat or overweight .An obese person has accumulated so much body fat that it might have a negative effect on their health. If a person's bodyweight is at least 20% higher than it should be, he or she is considered obese. If your Body Mass Index (BMI) is between 25 and 29.9 you are considered overweight. If your BMI is 30 or over you are considered obese.
It is important for patients to realize that a small drop in weight is a good start and a great achievement. Experts have found that obese people who lose weight slowly and constantly, say one or two pounds each week, are more successful in keeping their weight down when they have reached their target weight.
According to the experts, successful and permanent weight loss is best achieved as a result of increased physical activity, changing how and when you eat, and modifying your behavior. Some patients may be prescribed medication, while others might undergo weight-loss surgery.
Weight gain usually happens over time. Most people know when they've gained weight. Some of the signs of overweight or obesity include:
- Clothes feeling tight and needing a larger size.
- The scale showing that you've gained weight.
- Having extra fat around the waist.
- A higher than normal body mass index and waist circumference.
The balance between calorie intake and energy expenditure determines a person's weight. If a person eats more calories than he or she burns (metabolizes), the person gains weight (the body will store the excess energy as fat). If a person eats fewer calories than he or she metabolizes, he or she will lose weight. Therefore the most common causes of obesity are overeating and physical inactivity. Ultimately, body weight is the result of genetics, metabolism, environment, behavior, and culture.
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Heredity (genetics) - A person is more likely to develop obesity if one or both parents are obese. Genetics also affect hormones involved in fat regulation. For example, one genetic cause of obesity is leptin deficiency. Leptin is a hormone produced in fat cells and also in the placenta. Leptin controls weight by signaling the brain to eat less when body fat stores are too high. If, for some reason, the body cannot produce enough leptin or leptin cannot signal the brain to eat less, this control is lost, and obesity occurs. The role of leptin replacement as a treatment for obesity is currently being explored.
- Binge-eating (overeating) - Overeating leads to weight gain, especially if the diet is high in fat. Foods high in fat or sugar (for example, fast food, fried food, and sweets) have high energy density (foods that have a lot of calories in a small amount of food). Epidemiologic studies have shown that diets high in fat contribute to weight gain.
- A carbohydrate rich diet - The role of carbohydrates in weight gain is not clear. Carbohydrates increase blood glucose levels, which in turn stimulate insulin release by the pancreas, and insulin promotes the growth of fat tissue and can cause weight gain. Some scientists believe that simple carbohydrates (sugars, fructose, desserts, soft drinks, beer, wine, etc.) contribute to weight gain because they are more rapidly absorbed into the bloodstream than complex carbohydrates (pasta, brown rice, grains, vegetables, raw fruits, etc.) and thus cause a more pronounced insulin release after meals than complex carbohydrates. This higher insulin release, contributes to weight gain.
- Frequency of eating - The relationship between frequency of eating (how often you eat) and weight is somewhat controversial. There are many reports of overweight people eating less often than people with normal weight. Experts have observed that people who eat small meals four or five times daily, have lower cholesterol levels and lower and/or more stable blood sugar levels than people who eat less frequently (two or three large meals daily). One possible explanation is that small frequent meals produce stable insulin levels, whereas large meals cause large spikes of insulin after meals.
- Slow metabolism - Women have less muscle than men. Muscle burns (metabolizes) more calories than other tissue (which includes fat). As a result, women have a slower metabolism than men, and hence, have a tendency to put on more weight than men, and weight loss is more difficult for women. As we age, we tend to lose muscle and our metabolism slows; therefore, we tend to gain weight as we get older particularly if we do not reduce our daily caloric intake.
- Less physical activity - Sedentary people burn fewer calories than people who are active. Research has proven that physical activity is strongly correlated with weight gain in both sexes.
- Medicinal side-effects - Medications associated with weight gain include certain antidepressants (medications used in treating depression), diabetes medications (medications used in lowering blood sugar such as insulin), and certain hormones such as oral contraceptives. Weight gain may also be seen with some high blood pressure medications. The reason for the weight gain with the medications differs for each medication. If this is a concern for you, you should discuss your medications with your physician rather than discontinuing the medication, as this could have serious effects.
- Psychological factors - For some people, emotions influence eating habits. Many people eat excessively in response to emotions such as boredom, sadness, stress, or anger. While most overweight people have no more psychological disturbances than normal weight people, about 30% of the people who seek treatment for serious weight problems have difficulties with binge eating.
- Obesity related diseases - such as hypothyroidism, insulin resistance, polycystic ovary syndrome, and Cushing’s syndrome are also contributors to obesity.
Following a healthy lifestyle can help you prevent overweight and obesity. Many lifestyle habits begin during childhood. Thus, parents and families should encourage their children to make healthy choices, such as following a healthy diet and being physically active.
Make following a healthy lifestyle a family goal. For example:
- Follow a healthy eating plan. Make healthy food choices, keep your calorie needs and your family's calorie needs in mind, and focus on the balance of energy IN and energy OUT.
- Focus on portion size. Watch the portion sizes in fast food and other restaurants. The portions served often are enough for two or three people. Children's portion sizes should be smaller than those for adults. Cutting back on portion size will help you balance energy IN and energy OUT.
- Be active. Make personal and family time active. Find activities that everyone will enjoy. For example, go for a brisk walk, bike or rollerblade, or train together for a walk or run.
- Reduce screen time. Limit the use of TVs, computers, DVDs, and videogames because they limit time for physical activity. Health experts recommend 2 hours or less a day of screen time that's not work- or homework-related.
- Keep track of your weight, body mass index, and waist circumference. Also, keep track of your children's growth.
Hopefully after this article you are more aware of the effects of obesity. Many people do not realize how damaging obesity can be to the body and for your overall health. Obesity is something that is increasingly on the rise today and will continue to rise unless we do something about it like informing people of how bad it really is and encouraging people to live a health-enhancing lifestyle. A healthy diet and exercising two to three times a week is key to not becoming obese. Let's change the trend of obesity by living healthy lives and building towards a healthy India.
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