7 Heart-Healthy Proteins for Managing Type 2 Diabetes

Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult your registered dietitian or healthcare provider for personalized nutrition guidance.

Protein is a critical nutrient for people with Type 2 diabetes for two reasons: it has minimal effect on blood sugar, and it’s essential for building and preserving muscle mass — which is the body’s primary glucose disposal tissue. At the same time, many people with Type 2 diabetes also have elevated cardiovascular risk, making the source of protein matter. This guide covers the proteins with the strongest evidence for both blood sugar management and heart health.

Why Protein Source Matters in Type 2 Diabetes

Not all proteins are equal in their cardiovascular impact. Red meat and processed meat — while high in protein — are associated with higher cardiovascular risk and, in some studies, higher Type 2 diabetes risk. The American Heart Association recommends prioritizing plant-based proteins, fatty fish, and lean poultry over red and processed meat for people with cardiovascular risk factors.

The 7 Best Protein Sources for Type 2 Diabetes and Heart Health

1. Fatty Fish (Salmon, Mackerel, Sardines, Herring)

Fatty fish tops every evidence-based list of heart-healthy proteins for good reason: it combines high-quality protein with omega-3 fatty acids that directly reduce cardiovascular risk. Omega-3s lower triglycerides, reduce arterial inflammation, and slightly lower blood pressure. Multiple large-scale studies show regular fatty fish consumption is associated with reduced cardiovascular mortality. Aim for at least two 3–4 oz servings per week.

2. Legumes (Beans, Lentils, Chickpeas)

Legumes provide protein and carbohydrates together — but the carbohydrates are so fiber-rich that they digest slowly and produce minimal glucose spikes. A meta-analysis found that replacing red meat with legumes significantly reduces LDL cholesterol and cardiovascular risk. Legumes also contain no saturated fat and provide soluble fiber that directly lowers LDL. Black beans, lentils, and chickpeas are among the most versatile and accessible options.

3. Eggs

Eggs are a practical, affordable, complete protein source with minimal effect on blood sugar. The cardiovascular question around eggs — specifically dietary cholesterol — has largely been resolved: for most healthy people, moderate egg consumption (up to 7 per week) does not significantly raise cardiovascular risk. Eggs provide leucine, an amino acid that stimulates muscle protein synthesis, making them particularly valuable for preserving muscle mass in older adults with Type 2 diabetes.

4. Skinless Poultry (Chicken, Turkey)

Lean poultry provides high-quality protein without the saturated fat load of red meat. Removing the skin dramatically reduces saturated fat content. Grilled, baked, or poached chicken breast is one of the most versatile protein sources for people managing both blood sugar and cardiovascular risk. Turkey is similarly lean and provides tryptophan, which supports serotonin production and may help with mood regulation — relevant given the high rates of depression in Type 2 diabetes.

5. Tofu and Tempeh

Soy-based proteins provide complete protein (all essential amino acids) from a plant source with essentially no saturated fat. Isoflavones in soy have been associated with modest LDL reduction in clinical trials. Tempeh (fermented soy) also provides gut-beneficial probiotics. Both are excellent substitutes for meat in stir-fries, tacos, and grain bowls. Tempeh has a firmer texture and nuttier flavor that many people find more satisfying than tofu.

6. Greek Yogurt and Cottage Cheese

Plain (unsweetened) Greek yogurt and low-fat cottage cheese are high-protein dairy options with moderate carbohydrate content and good cardiovascular profiles. Greek yogurt also contains probiotics that support gut microbiome health — increasingly recognized as relevant in Type 2 diabetes management. A 6 oz serving of plain Greek yogurt provides 15–20g of protein. Avoid flavored varieties, which typically contain 12–25g of added sugar.

7. Nuts and Nut Butters

While not as protein-dense as animal sources, nuts provide a combination of protein, healthy monounsaturated fats, and fiber that makes them excellent for blood sugar stability and heart health. A meta-analysis of clinical trials found that regular nut consumption reduced LDL cholesterol, triglycerides, and blood sugar in people with Type 2 diabetes. Almonds, walnuts (particularly rich in omega-3s), and pistachios are highest in research support. A 1 oz (28g) portion is the standard serving.

Proteins to Limit

• Processed meat (bacon, sausage, deli meats, hot dogs) — associated with significantly higher cardiovascular risk and diabetes progression risk; high in sodium and saturated fat
• Fatty red meat (ribeye, T-bone, lamb) — high saturated fat; can be consumed occasionally, but should not be the primary protein source
• Fried protein sources — the protein itself is fine; the frying process adds calories, refined carbohydrates (breading), and inflammatory oils

Related Reading

• Type 2 Diabetes Daily Diet Plan: What to Eat, What to Avoid, and How to Plan
• Diet and Nutrition for Type 2 Diabetes: What the Evidence Says
• What Happens to Your Body When You Have Type 2 Diabetes
• Type 2 Diabetes Complications: What They Are and How to Prevent Them

keithsurveys2@gmail.com

Keith Williams is the creator of ABCs of A1C, an educational resource focused on blood sugar control and Type 2 diabetes awareness. His work focuses on translating complex metabolic and diabetes research into practical lifestyle information that readers can understand and apply in daily life.

See Full Bio