What You Eat May Help Protect Your Heart When You Have Type 1 Diabetes

People with Type 1 diabetes develop heart disease at higher rates than the general population. Understanding what increases this risk—and what might lower it—is important for long-term health.

Researchers have identified several blood markers that predict heart disease risk, including homocysteine, C-reactive protein, fibrinogen, and PAI-1. These markers reflect inflammation and how easily blood clots in the body. Higher levels are associated with greater cardiovascular disease risk.

Scientists studied 563 adults with Type 1 diabetes and 692 without diabetes over three years. They tracked what people ate using food questionnaires and measured blood markers at multiple time points.

Researchers scored participants' diets based on three healthy eating patterns: the Alternate Healthy Eating Index-2010, the DASH (Dietary Approaches to Stop Hypertension) diet, and the Mediterranean-Style Dietary Pattern. These patterns emphasize whole grains, vegetables, fruits, legumes, fish, and healthy fats while limiting processed foods and added sugars.

When people with Type 1 diabetes followed healthier eating patterns more closely, their homocysteine levels decreased. For every one-point increase in diet pattern score, homocysteine dropped by 0.56%.

The study found associations between adherence to healthy dietary patterns and lower levels of these inflammation and clotting markers in both people with Type 1 diabetes and those without it. This suggests that eating well may help protect the heart for everyone, but especially those at higher cardiovascular risk.

This research adds to growing evidence that the foods you choose matter for cardiovascular health. Following established healthy eating patterns—whether Mediterranean, DASH, or another evidence-based approach—appears to support healthier blood markers associated with heart protection.

If you have Type 1 diabetes and are interested in dietary changes to support your heart health, speak with your healthcare team or a registered dietitian. They can help you find an eating pattern that works for your lifestyle, diabetes management, and personal goals.

Source: The Journal of nutrition. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.