Diet and Exercise Cut Type 2 Diabetes Risk Across Genetic Profiles

Lowering Processed Foods and Exercising Halves High Genetic Risk

Combining regular exercise with a diet low in ultra-processed foods, abbreviated as UPFs, reduces type 2 diabetes risk even for individuals with high genetic susceptibility. Researchers presented these observational findings at the European Association for the Study of Diabetes (EASD) annual meeting in Milan, Italy. The analysis evaluated data from 56,964 adults enrolled in the U.K. Biobank study.

Across the entire group, participants who ate fewer ultra-processed foods and logged regular activity were up to 70 percent less likely to develop the condition. For participants with high genetic predisposition, the combination of both lifestyle habits reduced type 2 diabetes incidence by 49 percent. Lead researcher Wenxin Xu of City University of Hong Kong noted that diet and physical activity remain modifiable factors regardless of baseline inherited risk.

The Independent Effects of Food Choices and Weekly Movement

Dietary intake of ultra-processed items and weekly physical activity each correlated directly with type 2 diabetes incidence over an average 7.8-year follow-up period. Out of the 56,964 participants analyzed, 926 developed type 2 diabetes during the monitoring period. The average participant age was 69.5 years, and 42.3 percent of the cohort was male.

The risk of type 2 diabetes rose incrementally alongside higher ultra-processed food intake. For every 10 percent increase by weight of ultra-processed food in a participant's diet, the risk of developing type 2 diabetes increased by 7 percent. Conversely, participants who met the World Health Organization (WHO) target of at least 150 minutes of weekly activity were 39 percent less likely to develop the condition than less active peers.

How Exercise Mitigates High Processed Food Intake

Sufficient physical activity offsets part of the diabetes risk associated with high consumption of ultra-processed foods. In participants who consumed 33 percent or more of their total food intake by weight as ultra-processed items, meeting physical activity benchmarks lowered risk across all genetic groups. The research calculated moderate-to-vigorous physical activity, or MVPA, using wrist accelerometers worn continuously for one full week.

Among participants consuming high amounts of ultra-processed food, meeting the weekly activity target reduced type 2 diabetes risk by 31 percent in those with high genetic risk. That same exercise threshold was linked to a 57 percent risk reduction in people with intermediate genetic risk, and a 58 percent reduction in those with low genetic risk. Wrist-worn monitors counted brisk walking, cycling, hiking, dog walking, sustained housework, and gardening as qualifying activity.

Combined Lifestyle Interventions Across Genetic Tiers

Adopting both a low ultra-processed diet and adequate physical activity provided greater protection than modifying either factor alone. In participants categorized as highly susceptible through genetic data, eating approximately 11 percent or less of food weight from ultra-processed options was associated with a 35 percent lower likelihood of disease. Meeting the physical activity target alone was associated with a 33 percent lower likelihood in the same group.

When individuals combined both habits, risk reductions varied depending on genetic risk strata. Participants with intermediate genetic susceptibility saw a 70 percent risk reduction when combining low processed intake with regular activity. Those with low genetic susceptibility experienced a 59 percent risk reduction, while those in the high genetic tier achieved a 49 percent reduction.

Study Limitations and Context for Metabolic Health

The U.K. Biobank findings rely on observational associations rather than a randomized controlled trial design. Dietary intake was determined through baseline questionnaires based on the Nova classification system, while activity data reflected a single week of wrist-worn tracker data. These snapshot measurements might not reflect dietary or exercise shifts made over the subsequent 7.8 years of follow-up.

The analyzed cohort had an average age of 69.5 years, meaning the exact risk percentages may differ in younger populations. Individuals reviewing their metabolic risk can discuss lifestyle modifications with their clinician. Clinicians can help patients evaluate practical ways to reduce dietary ultra-processed foods and incorporate moderate-to-vigorous activities such as brisk walking or cycling into their routine.