Resveratrol, an ingredient in red wine, is showing promise in initial trials of helping improve metabolism. Previous trials in animals showed that resveratrol reduces insulin resistance and other diet-related ills. In the first human study 11 obese men were given trans-resveratrol supplements for 30 days.
Researchers recorded the participants’ diet and energy output. Positive results included a reduction of fat in the liver, decreased blood glucose levels and lower blood pressure readings. Researchers noted that the participants’ metabolic rate lowered and their cells used energy more efficiently; these results are similar to those seen in people with very low calorie diets. More testing will need to be done to determine whether resveratrol can be used to combat aging and obesity.