Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have an adverse effect on health, leading to reduced life expectancy and/or increased health problems. Body mass index (BMI), a measurement which compares weight and height, defines people as overweight (pre-obese) if their BMI is between 25 kg/m2 and 30 kg/m2, and obese when it is greater than 30 kg/m2. Obesity increases the likelihood of various diseases, particularly heart disease, type 2 diabetes, breathing difficulties during sleep, certain types of cancer, and osteoarthritis. Obesity is most commonly caused by a combination of excessive dietary calories, lack of physical activity, and genetic susceptibility, although a few cases are caused primarily by genes, endocrine disorders, medications or psychiatric illness. Evidence to support the view that some obese people eat little yet gain weight due to a slow metabolism is limited; on average obese people have a greater energy expenditure than their thin counterparts due to the energy required to maintain an increased body mass. Dieting and physical exercise are the mainstays of treatment for obesity. Moreover, it is important to improve diet quality by reducing the consumption of energydense foods such as those high in fat and sugars, and by increasing the intake of dietary fiber. To supplement this, or in case of failure, anti-obesity drugs may be taken to reduce appetite or inhibit fat absorption. In severe cases, surgery is performed or an intragastric balloon is placed to reduce stomach volume and/or bowel length, leading to earlier satiation and reduced ability to absorb nutrients from food. Obesity is a leading preventable cause of death worldwide, with increasing prevalence in adults and children and authorities view it as one of the most serious public health problems of the 21st century. Obesity is stigmatized in much of the modern world (particularly in the Western world), though it was widely perceived as a symbol of wealth and fertility at other times in history, and still is in some parts of the world. Liposuction can often provide very substantial improvements, but it must be emphasised that it is neither a weight loss technique nor a solution for obesity. It is also not an effective treatment for cellulite, a condition that gives your skin an uneven, dimpled appearance. However, liposuction is a successful procedure for spot fat reduction. Fat deposits which cannot be removed by diet or exercise usually occur in areas such as the chin, chest, stomach, sides, back and thighs. Liposuction is a fat removal procedure that aims to eliminate excess stubborn fat from these hard to shift areas. The liposuction sites may be the following: thighs, hips, knees, arms, neck, back, chin or buttocks. Liposuction should be thought of as a sculpting procedure that can change the contours of your body or face. Liposuction can be ideal for patients who have reached physical maturity, are at or near their ideal body weight, and have stubborn, localized deposits of fat they want removed. Both men and women can be excellent candidates for liposuction.