The Biological Processes Of Obesity

1527 Words Mar 8th, 2016 7 Pages
Obesity can develop when the cumulative energy intake exceeds energy expenditure, when this happens the excess is stored primarily as fat in adipose tissues. The biological processes that regulate the energy balance are highly regulated and this mechanism can be overwhelmed, because of a need to eat when not hungry, if attractive high calorie food is presented in attractive settings, and if individuals are regularly non-mobile for extended periods. The control pathways that include short-term signaling of hunger and engorgement to the central nervous system with the hormones that come from the gastrointestinal tract, long-term signaling of energy stores to the brain via leptin and insulin, as well as the control of metabolism. Rare genetic syndromes also play a role and these present in early childhood with severe obesity these include mutations in the pro-opiomelanocortin gene and deficiencies in the leptin this demonstrates that the pathways are biologically important in humans. Most obesity cases develop because of modern lifestyles in genetically susceptible individuals. The changes include excessive consumption of high-energy food in tandem with low levels of physical activity and that in many societies; less affluent people have a higher incidence (Lee et al 2013). Other causes of obesity that are considered include some drugs that can cause an increase in appetite and structural damage to areas of the nervous system that control appetite. Though men and women are…
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