A large pooled analysis published in the Journal of Sport and Health Science found that low levels of physical activity are associated with many complications of type 2 diabetes, including stroke and diabetic eye disease. Researchers combined data from more than 2.3 million people across 27 studies from around the world and estimated that up to 10 percent of diabetes complications could be attributed to physical inactivity.
Lead author Jayne Feter of the Federal University of Rio Grande do Sul in Brazil said the results challenge the notion that complications are unavoidable. The study suggests that achievable increases in movement among people living with diabetes could prevent a meaningful share of adverse outcomes.
Clinical perspective
Endocrinologist Yesika Garcia MD, who was not involved in the research, said the findings match clinical experience: regular physical activity can substantially reduce the risk of complications and improve quality of life. Many clinicians now prescribe exercise alongside medications because of its broad benefits.
Cautions and limitations
The analysis links inactivity to many diabetes complications but does not prove causation for every individual case. David Cutler MD, a family medicine physician, urged caution when interpreting the results. He highlighted several limitations: variability by ethnicity and geography, the study’s binary classification of activity as active versus inactive, and inconsistent measurement of important confounders such as obesity, hypertension, access to care, glycemic control, and medication adherence. Despite these caveats, he said physical activity remains an important tool in diabetes care.
Global context
The International Diabetes Federation reported 589 million people living with diabetes in 2024 and projects that number could reach 853 million by 2050. People with diabetes face increased risks of cardiovascular disease, stroke, kidney disease, and diabetic retinopathy. This new analysis suggests that a sizable portion of these outcomes may be linked to inactivity and therefore potentially preventable.
How activity helps
Exercise supports diabetes management through several biological and physiological pathways:
– Improved insulin sensitivity, so muscles use glucose more efficiently during and after activity.
– Reduced cardiovascular risk through lower blood pressure, improved cholesterol profiles, and reduced inflammation.
– Better body composition, with increased muscle mass that raises metabolic rate and glucose uptake.
Clinical guidelines and definitions
Major clinical sources associate moderate to high levels of physical activity with lower morbidity and mortality in people with diabetes, and they warn that prolonged sitting increases cardiovascular risk and death. The study defined inactivity as failing to meet the standard recommendation of 150 minutes per week of moderate-intensity aerobic activity.
Practical guidance
Public health guidance from the U.S. Centers for Disease Control and Prevention recommends at least 150 minutes per week of moderate-intensity activity for adults plus two days of muscle-strengthening activities. Examples of moderate activities include brisk walking, recreational swimming, active yoga, dancing, yard work, and water aerobics. A simple rule of thumb: during moderate activity you should be able to talk but not sing.
Benefits beyond weight loss include improved cardiorespiratory fitness, better glycemic control and lipid profiles, reduced insulin resistance, higher energy, and lower blood pressure.
Implications
The authors say the findings reframe physical activity as a core strategy for preventing diabetes complications. Increased activity among people with diabetes could reduce hospitalizations, disability, and health care costs while improving quality of life. Clinicians and public health programs can use these results to emphasize that a meaningful portion of diabetes complications are modifiable and that achievable lifestyle changes can make a real difference.
