The researchers, from 23 universities in Spain and Harvard Chan School, split 4,746 PREDIMED-Plus participants into an intervention group and a control group and followed their health outcomes for six years. The intervention group adhered to a Mediterranean diet; reduced their caloric intake by about 600 calories per day; engaged in moderate physical activity, such as brisk walking and strength and balance exercises; and received professional support for weight loss control. The control group adhered to a Mediterranean diet without calorie restriction, exercise guidance, or professional support. Participants ranged from age 55 to 75, were overweight or obese, and had metabolic syndrome, but were free of T2D at baseline.

The study found that those in the intervention group had a 31% lower risk of developing T2D compared to those in the control group. Additionally, the intervention group lost an average of 3.3 kilograms and reduced their waist circumference by 3.6 centimeters, compared to 0.6 kilograms and 0.3 centimeters in the control group. Scientists found 3 simple tweaks that cut diabetes risk by 31% – https://www.sciencedaily.com/releases/2025/08/250829022835.htm Harvard T.H. Chan School of Public Health. ScienceDaily. http://www.sciencedaily.com/releases/2025/08/250829022835.htm (accessed August 29, 2025).

Guess I’ll cut out beer.