Obesity is an imbalance between fat intake and energy expenditure. Now day obesity is a problem of health and mind in many people. The stimulating factors of obesity is social environment, advertising of many food products induce the consumers want to eat more than the energy use. The rush hours working lifestyle make many people take junk food and fast food more than nutritionists. The important factor is Generic, it is found that one obese patient has a 40% chance of obesity and both obese patients have 80% chance of obesity.
There is no truly direct way to measure how fat you are or how much the body fat. Common way is calculate BMI (Body Mass Index).
BMI =Weight (kg) / Height x Height (m x m)

If the BMI > 27 means now you have severe problem of obesity and may increase risk for morbidity, developing a number of chronic disease and health.

The chronic diseases that are developed from obesity are diabetes, high blood pressure, stroke, heart attack, cancer, gout and sleep apnea. So control the weight is the best way to void health problem.

There are many ways to control and reduce the weight. Exercise and should low calories foods are the best way. The other way is using weigh control products.

There are 2 kinds of weight control products.

1. Potential dangerous diet products, this group working as appetite suppression, interference food absorption and laxative. Taking this group you have to consult the pharmacist or doctor.

2. Questionable safety / efficacy products, this groups more safety than the first group. Normally, weigh control products are from natural such as Garcinia cambogia, Konjac, or Spirulina.
Garcinia cambogia: the active ingredient is Hydroxyciric acid (HCA). It works as inhibit fat and cholesterol accumulation by slowing down the enzyme. And may be suppression of appetite so can reduce food intake and promote weight loss. Dosage of Garcinia cmbogia, beginning from 750 mg to 1,500 mg, takes 2-3 times in individual dose before meals.
Chitosan: It is product from shells of shell fish. The mechanism of chitosan is binds to fatty acid and reduces cholesterols levels. Dosage of chitosan is 1 gram with each meal. However you should be careful lacking of vitamin A, D, E and K during taking chitosan.
Konjac: The active ingredient is Glucomanan (Polysaccharide) that is soluble fiber. It works by absorb water in the stomach, make bulk and you will feel fullness. So the customers do not want to eat much. This product is more safety than other. It does not interference the body mechanism. Recommend dose is 1 gram per a glass of water about 1 hour before meal.
Spirulina: It is unicellular blue-green algae. It contents essential amino acid and Gamma Linoleic Acid (GLA). GLA could promote loss of body fat but however there is no research to support the role of spirulina and weigh reduce.
Chromium: It works by maintain the blood sugar and cholesterol and control appetite. The recommended dose of chromium is 50-200 mcg a day.
Conclusion

Control the body weight helps you against the chronic diseases and make good looking. There are many ways to reduce and control the weight. Using weight control products is not the best way, especially use potential dangerous diet products without consult from the doctors or the pharmacists. Balance the energy expenditure and fat intake is an important point. If you eat more you have to exercise more. Other ways are break bad habits such as alcohol intake, watching T.V. during eating, or ignore vegetables. You have to realize how much the fat in each menu and should the low cholesterol with high nutrition.