Evidence that calorie restriction could prevent age-related mental decline in humans has been found by esearchers at the University of Munster in Germany.

Those in the calorie-restricted group in the experiment were advised to reduce their food intake by about 30 percent without changing the proportions of nutrients in their diet.

The researchers also found that people who cut calories had improvements in several indicators of metabolic health, such as blood levels of insulin and C-reactive protein, a marker of inflammation.