Protein: How Much You Really Need and the Best Sources
Protein recommendations range wildly depending on who you ask. Here's what the research actually says about optimal intake, timing, and the best sources for your goals.
The Science of Protein Requirements
The RDA of 0.8g per kilogram of body weight is a minimum to prevent deficiency — not an optimal target. Research consistently shows that 1.6-2.2g per kilogram supports muscle maintenance and growth. For someone weighing 70kg (154 lbs), that's 112-154g of protein daily. If you're in a calorie deficit, aim toward the higher end to preserve lean mass. If you're at maintenance or in a surplus, the lower end is sufficient. Beyond 2.2g/kg, there's minimal additional benefit for most people.
Timing and Distribution
How you spread your protein throughout the day matters more than most people realize. Research shows that distributing protein evenly across 3-4 meals (25-40g per meal) maximizes muscle protein synthesis better than loading it all into one or two meals. A protein-rich breakfast is particularly impactful since most people under-eat protein early in the day. Post-workout protein is beneficial but the 'anabolic window' is wider than gym culture suggests — within 2-3 hours is plenty.
Best Sources for Every Diet
For omnivores: chicken breast, eggs, Greek yogurt, salmon, and lean beef offer the best protein-per-calorie ratios. For plant-based eaters: tofu, tempeh, lentils, chickpeas, and edamame are excellent. Supplements like whey or pea protein are convenient but not necessary if you're hitting targets through food. Focus on 'protein leverage' — building meals around the protein source first, then adding carbs and fats. This simple strategy makes hitting your target almost automatic.
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