Researchers of Genetics at Merck Research Laboratories report that obesity; diabetes and heart disease are all linked to disruption in the entire gene network due to overeating.  Hundred of genes were disordered when mice were given high fat western diets. Research among Icelandic humans showed that people having a higher body mass index, have a different pattern of gene activation in their fatty tissues not seen in the blood DNA samples.

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According to American researchers, bariatric surgery patients with two obesity-related genetic variations are more likely to be obese compared to others. Published in the journal, Archives of Surgery, researchers analyzed patients’ blood samples for two common single nucleotide polymorphisms (SNPs) that are known to be connected with obesity. The research may offer new hope for patients who do not lose weight even after undergoing bariatric surgery.