Healthy Lifestyle Choices Can Slash Type 2 Diabetes Risk Despite Genetic Factors

New research indicates that adopting a diet low in ultra-processed foods combined with regular physical activity can significantly lower the risk of developing type 2 diabetes, even for individuals with a strong genetic predisposition to the condition. The findings are slated for presentation at the annual meeting of the European Association for the Study of Diabetes in Milan, Italy.

Led by Wenxin Xu of City University of Hong Kong, researchers analyzed data from tens of thousands of adults participating in the U.K. Biobank study. The investigation evaluated how dietary habits, specifically the consumption of ultra-processed foods classified via the Nova system, and exercise habits interacted with inherited genetic risks over an average follow-up period of nearly eight years.

According to the data analysis, type 2 diabetes risk escalated steadily alongside higher consumption of ultra-processed foods. For every 10% increase by weight in a person’s diet consisting of ultra-processed foods, their likelihood of developing type 2 diabetes rose by 7%. Conversely, meeting the World Health Organization recommendation of at least 150 minutes of moderate-to-vigorous physical activity each week—such as brisk walking, cycling, or active gardening—was associated with a 39% lower risk compared to exercising less.

Overcoming Genetic Predisposition Through Diet and Exercise

When researchers looked closely at participants carrying high genetic susceptibility to type 2 diabetes, they discovered that lifestyle modifications could substantially counteract inherited risk factors. Keeping ultra-processed food intake low, accounting for approximately 11% or less of total daily food intake by weight, was linked to a 35% reduction in diabetes likelihood among high-risk individuals. Similarly, meeting physical activity guidelines alone correlated with a 33% lower risk in the same high-risk group.

Furthermore, regular exercise appeared to mitigate the adverse metabolic impacts of a poor diet. Among participants with high ultra-processed food consumption—defined as roughly 33% or more of their diet by weight—meeting the World Health Organization’s physical activity benchmarks was still associated with a 31% lower risk of type 2 diabetes among those with high genetic vulnerability. For individuals with intermediate or low genetic susceptibility, the risk reduction was even more pronounced at 57% and 58%, respectively.

The Power of Combined Lifestyle Changes

The study highlights that pairing a nutritious diet with consistent physical activity yields cumulative protective benefits. When participants maintained both low ultra-processed food intake and adequate physical activity, those with high genetic susceptibility saw their risk of type 2 diabetes plummet by 49%. Individuals with intermediate genetic risk experienced a 70% risk reduction, while those with low genetic susceptibility lowered their risk by 59%.

While the authors emphasize that the observational nature of the research means direct cause-and-effect cannot be definitively proven, the results reinforce established preventive guidelines. Lead researcher Wenxin Xu noted that the insights offer an empowering message for patients worried about family medical history, stating that genes are not destiny and that positive lifestyle choices can meaningfully protect metabolic health regardless of one’s background.

Source: Medical Xpress