Obesity is a multifaceted health problem that is the result of complex interactions of genes, environment and lifestyle. Obesity is progressively increasing at the global level and has assumed epidemic proportions in adults as well as children. It is a serious concern for health professionals and if it goes unchecked can influence social fabric. Obesity is not only affected the physical appearances and attractiveness of a person, but it can have psychological consequences such as low self-esteem. It determines the morbidity pattern in the society because it is a cause of hypertension, cardiovascular diseases, diabetes and many mental health issues.
A person is more likely to develop obesity if one or both parents are obese. Leptin deficiency is one of the major causes of obesity. Leptin is a hormone produced by fat cells and also in the placenta. Leptin controls weight by signaling the brain to eat less when body fat stores are too high.
Obesity is associated with psychological problems. Many people eat excessively in response to emotions such as boredom, sadness or anger. Many individuals seek comfort and indulge in eating high fat and high sugar foods that cause obesity.
Certain diseases associated with secretion of hormones, e.g. hypothyroidism, hypogonadism, and Cushing’s syndrome exhibit obesity as one of the characteristic features.
Birth weight and childhood growth pattern:
It has been shown that slow growth of the fetus in utero and during infancy is followed by accelerated weight gain in childhood. This combination of small size at birth and accelerated childhood weight gain has been found to be associated with exaggeration of adiposity as well as insulin resistance in later life.