How Much Protein Do You Need?
Muscle Gain (Bulking)
1.6-2.2g/kg (0.7-1.0g/lb)
80kg lifter → 128-176g daily
Maximizes muscle protein synthesis without wasting calories.
Fat Loss (Cutting)
1.8-2.7g/kg (0.8-1.2g/lb)
80kg lifter → 144-216g daily
Higher protein preserves muscle, increases satiety, burns more calories.
Maintenance (Sedentary)
0.8-1.2g/kg (0.4-0.5g/lb)
80kg sedentary → 64-96g daily
RDA for preventing deficiency - not optimizing body composition.
Endurance Athletes
1.2-1.6g/kg (0.5-0.7g/lb)
70kg runner → 84-112g daily
Lower than lifters - carbs prioritized for glycogen.
Practical Recommendation
If you lift weights regularly, aim for 2.0-2.2g/kg (0.9-1.0g/lb). This covers both muscle gain and fat loss scenarios without overthinking it.
Does Protein Timing Matter?
The Science
Muscle protein synthesis (MPS) is maximized at ~0.4g/kg per meal (~30-40g for most people). A 2018 meta-analysis by Schoenfeld & Aragon confirmed that total daily protein matters far more than per-meal timing for overall muscle growth.
Practical Guidelines
- Minimum 3 meals/day with 25-40g protein each
- Pre-workout: Protein 1-3 hours before can improve performance
- Post-workout: 20-40g within 2-3 hours (window is wider than thought)
- Before bed: 30-40g slow-digesting protein (casein, Greek yogurt)
Bottom Line
Don't stress about perfect timing. Hit your daily target, spread it across 3-5 meals, and include protein around workouts. That's 90% of the benefit. Use our macros guide to calculate your needs.
Best Protein Sources
Not all protein sources are equal in terms of amino acid completeness and digestibility. The FAO's DIAAS protein quality scores provide an objective ranking of how efficiently your body can use the protein from different foods.
Tier 1: Lean Animal Proteins
- Chicken breast: 31g per 100g (165 cal)
- Turkey breast: 29g per 100g (135 cal)
- Lean beef (90/10): 26g per 100g (176 cal)
- Salmon: 25g per 100g (206 cal) + omega-3s
- Cod/Tilapia: 24g per 100g (90 cal) - very lean
- Eggs (whole): 13g per 2 large (140 cal)
- Greek yogurt: 10g per 100g (59 cal)
Complete amino acids, high leucine content per serving, easily digestible.
Tier 2: Plant Proteins & Dairy
- Tofu (firm): 17g per 100g (144 cal)
- Tempeh: 19g per 100g (193 cal)
- Cottage cheese: 11g per 100g (72 cal)
- Lentils (cooked): 9g per 100g (116 cal)
- Chickpeas: 9g per 100g (164 cal)
Good protein, but often incomplete amino profiles. Combine sources.
Tier 3: Supplements
Learn more about protein powders in our whey protein guide.
Whey Isolate
25g per scoop (~110 cal). Fast digesting. Post-workout ideal.
Casein
24g per scoop (~120 cal). Slow digesting. Before bed ideal.
Pea Protein
24g per scoop (~120 cal). Vegan option. Good amino profile.
Is High Protein Safe?
Myth #1: "High Protein Damages Kidneys"
Reality: In healthy individuals, high protein (up to 2.5g/kg) does NOT harm kidney function. A 2016 study by Antonio et al. found no adverse effects on kidney function after 1 year of high protein intake (up to 3.3g/kg/day).
Exception: If you have existing kidney disease, consult a doctor.
Verdict: ✅ Safe for healthy individuals.
Myth #2: "High Protein Weakens Bones"
Reality: High protein actually improves bone density, especially with resistance training and adequate calcium.
Verdict: ❌ Myth. Protein supports bone health.
Real Concern: Digestive Issues
The most common side effect is bloating/gas when ramping up too fast.
Solutions: Increase gradually, drink 3-4L water daily, eat fiber-rich foods.
Sample Day: 150g Protein
Breakfast (27g)
3 eggs scrambled + 2 toast + berries
Lunch (54g)
150g chicken + 200g rice + vegetables
Snack (26g)
Protein shake + banana
Dinner (44g)
150g salmon + sweet potato + salad
Total: 151g protein, ~1,840 calories
Bottom Line
Protein is safe and essential for muscle gain, fat loss, and overall health.
Aim for 1.6-2.2g/kg (0.7-1.0g/lb) if you train. Spread across 3-5 meals. Focus on quality sources - whole foods over supplements when possible.
The myths about kidney damage and bone weakening are debunked. Stay hydrated, increase intake gradually, and you'll be fine.
References
- Morton RW, et al. Protein supplementation and resistance training-induced gains. Br J Sports Med. 2018.
- Longland TM, et al. Higher protein during energy deficit promotes lean mass. Am J Clin Nutr. 2016.
- Phillips SM, Van Loon LJ. Dietary protein for athletes. J Sports Sci. 2011.
- Schoenfeld BJ, Aragon AA. How much protein per meal? J Int Soc Sports Nutr. 2018.
- Antonio J, et al. High protein diet has no harmful effects. J Nutr Metab. 2016.
- Darling AL, et al. Dietary protein and bone health meta-analysis. Am J Clin Nutr. 2009.
- Westerterp-Plantenga MS, et al. Protein's role in satiety and weight loss. Br J Nutr. 2012.
- Devries MC, Phillips SM. Supplemental protein advantages. J Food Sci. 2015.