What Happens If I Eat 95% Lean Ground Beef Every Day?

At 5.09mg per 100g, a 200g serving provides 10.18mg—about 92% of the RDA for men. Daily intake above 40mg can cause nausea and copper deficiency, but this amount is safe unless you also take zinc supplements. Your body absorbs zinc efficiently from beef, so regular consumption can push you toward the upper limit if you eat large portions.

With 21.4g protein per 100g, a 200g serving delivers 42.8g protein—about 86% of a 50kg person's daily need. The high protein and moderate fat (5g) slow gastric emptying, keeping you full for hours. This supports muscle protein synthesis, especially if you train, but the lack of carbs means no glycogen replenishment.

Each 100g provides 2.38mg iron (13% DV) and 198mg phosphorus (16% DV). Heme iron from beef is absorbed 2-3 times better than plant iron, helping prevent anemia. Phosphorus works with calcium for bone health, but note calcium is low (9mg), so pair with dairy or leafy greens to balance.

With 0g carbs and 0g fiber, this food won't feed gut bacteria or promote bowel regularity. If it replaces high-fiber foods, you may experience constipation. The 0 glycemic index means no blood sugar spikes, which is beneficial for insulin control, but you'll need to source fiber elsewhere.