Foods to Avoid in Diabetes
People with diabetes should eliminate or strictly minimize sugar-sweetened beverages (including fruit juices), foods with added sugars, red and processed meats, refined grains, and ultraprocessed foods 1, 2.
Priority Foods to Eliminate or Minimize
Beverages - Highest Priority
- Replace all sugar-sweetened beverages and fruit juices with water or zero-calorie alternatives to manage blood sugar and reduce cardiovascular disease risk 1, 2
- This is one of the strongest recommendations with Grade A evidence, meaning the impact on glycemic control and cardiometabolic outcomes is well-established
Foods with Added Sugars
- Minimize consumption of foods with added sugar that displace more nutrient-dense options 1
- The concern here is twofold: direct glycemic impact and displacement of healthier foods
- Note: Small amounts of sucrose can be incorporated into a balanced meal plan, but the focus should be on minimizing, not liberalizing, added sugars
Protein Sources to Limit
- Limit red meat and avoid processed meats (bacon, sausage, deli meats) to reduce cardiovascular disease risk 1, 3
- Shift toward plant-based proteins (nuts, seeds, legumes) and fatty fish instead 1
Fats to Restrict
- Limit foods high in saturated fat: red meat, full-fat dairy, butter, and coconut oil 1
- This carries Grade A evidence for reducing cardiovascular disease risk, which is critical since cardiovascular disease is the leading cause of mortality in diabetes
Carbohydrate Quality Matters
- Avoid refined grains - choose whole grains with at least 14g fiber per 1,000 calories instead 2
- Minimize ultraprocessed foods and highly processed carbohydrate sources 2, 3
Critical Caveat for Specific Medications
If taking SGLT2 inhibitors (like empagliflozin, dapagliflozin, canagliflozin), absolutely avoid ketogenic/very low-carb diets due to increased risk of diabetic ketoacidosis 1. This is a potentially life-threatening complication that requires specific attention.
The Practical Framework
Rather than obsessing over individual "forbidden foods," focus on the pattern:
- Emphasize: non-starchy vegetables, whole fruits, legumes, whole grains, nuts, seeds, fatty fish, low-fat dairy
- Minimize: the items listed above (sugar-sweetened beverages, added sugars, red/processed meats, refined grains, ultraprocessed foods, saturated fats)
The evidence supports that no single macronutrient distribution is ideal - various eating patterns (Mediterranean, DASH, plant-based) work when they follow these core principles 1, 2. The key is consistent application of these food quality principles rather than rigid macronutrient ratios.
Common Pitfall to Avoid
Don't fall into the trap of thinking "sugar-free" processed foods are automatically healthy choices. The focus should be on minimally processed, nutrient-dense whole foods rather than simply avoiding sugar while consuming other low-quality foods 3.