Monday, December 4, 2017

Is genetics the cause of obesity?

            Obesity has become a huge problem in the world’s population with about 13% (about 650 million) of the adult population being obese in 2016. Most people attribute obesity to eating too much food and unhealthy food and not exercising enough. New research has come to light that indicates that obesity may be caused from genetics. Variants in a gene called Ankyrin-B has become a new focus for obesity studies. In a study using mice, it was found that variations in this gene causes fat cells to intake glucose at a faster rate than normal and in people with an aging metabolism or high-fat diet, it is near impossible not to become obese.

            Researchers have been able to link variations in Ankyrin-B genes to diseases including autism, muscular dystrophy, aging, diabetes, and irregular heartbeats. Studies were done by knocking out and creating different mutants of Ankyrin-B gene in mice. It was found that mice with these mutant genes became obese while having the same diet and exercise as the other mice with normal Ankyrin-B genes. The results showed the excess amount of lipids in the fat cells leaked into the liver and muscles which led to inflammation and disruption of response in insulin. It was found that mutating the Ankyrin-B genes led to the change of Glut4 which allows glucose to enter the fat cells at a faster rate.

            Observational research needs to be done with the general population looking at whether or not obese people have these mutated Ankyrin-B genes as well as looking at familial histories, height, weight and glucose metabolism in order to determine the effect of these variants on the human population.

“New Research Shows How a Gene Can Fuel Obesity in Mice.” News-Medical.net, 16 Nov. 2017, www.news-medical.net/news/20171116/New-research-shows-how-a-gene-can-fuel-obesity-in-mice.aspx.

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