Feel the need to eat chocolate when under pressure? You might be able to blame it on your genes, specifically a gene in the brain that responds to stress. This gene, when active, brings out your anxiety and as well as bringing about metabolic changes that tell your body to burn sugar, rather than fat. The same metabolic changes reduce insulin sensitivity in muscles, raising sugar levels in the blood, and causing the pancreas to churn out more insulin. According to the Institute scientists who revealed the gene’s function, if the constant stress of daily life keeps this gene overworked, the result could be metabolic disease, obesity and diabetes.