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Life sciences/Physiology/Endocrinology/Insulin resistance

Many studies have suggested that exaggerated ornamentation or weaponry, like beetle horns, deer antlers, or extremely long bird tails, are symbols of a male’s virility. Now, a new study demonstrates how this might work: Researchers have found that the size of a beetle’s horn is more sensitive to insulin signaling than other features, like the insect’s wings or genitalia.

Weight loss by gastric bypass surgery alters the metabolism of individuals in ways that are different from the effects of dieting, reports a new study in the 27 April issue of Science Translational Medicine. The results are preliminary but could help researchers find new ways to treat diabetes.

“The rapid reversal of diabetes after gastric bypass surgery points to mechanisms other than weight loss involved in improved glucose levels,” said lead author Blandine Laferrère, assistant professor in medicine at Columbia University College of Physicians and Surgeons.