New research from France shows that Selenium levels decrease as we grow older and this is tied into a loss of cognitive function. Cognitive function includes processes such as memory and comprehension, decision-making, and the ability to learn and even socialize. One cause of a decline in cognitive function is oxidative stress; this is caused by free radicals.

Researchers from the Department of Diabetes and Clinical Nutrition at Kyoto University gave 31 people either 10mg Corosolic Acid or inactive placebo a number of times, 5 minutes before an oral glucose tolerance test consisting of drinking 75-g of sugar in water in a cross-over design. The test subjects had diabetes, or impaired glucose tolerance, impaired fasting glucose, and 4 had normal sugar activity. The Corosolic Acid lowered blood glucose within 60 minutes and reached statistical significance by 90 minutes.