Can you eat too much protein?

In healthy adults, intakes up to 4.4 g/kg/day are safe. The practical concern is replacing other nutrients. 2.4 g/kg is a practical upper limit for most.

Does protein timing matter?

Total daily protein matters far more than timing. Having protein within 2 hours of training provides a modest benefit. The anabolic window is several hours wide.

Is plant protein as good as animal protein?

Plant proteins are generally less digestible and lower in leucine. Vegans should aim for the higher end (2.0–2.4 g/kg) and combine protein sources for complete amino acids.

How much protein can you absorb per meal?

Your body absorbs essentially all ingested protein. MPS responds optimally to 0.4–0.55 g/kg per meal (~30–44 g for an 80 kg person).

Nutrition

How Much Protein Do You Actually Need Per Day?

📅 March 16, 2026⏱ 6 min read🏷 Nutrition · Protein

Protein is the most important nutritional variable for both fat loss and muscle building. Yet most people significantly under-eat it. Here is exactly how much you need, based on current research — not outdated guidelines.

Protein Recommendations by Goal

Goal	Recommendation	Example (80 kg / 176 lb person)
General health (sedentary)	0.8 g/kg (WHO minimum)	64 g/day
Active adults	1.2–1.6 g/kg	96–128 g/day
Building muscle	1.6–2.2 g/kg	128–176 g/day
Cutting (muscle preservation)	2.0–2.4 g/kg	160–192 g/day
Older adults (65+)	1.2–1.6 g/kg	96–128 g/day

Why the WHO 0.8 g/kg Recommendation Is Outdated

The WHO minimum of 0.8 g/kg is the amount needed to prevent deficiency in sedentary adults — it is not optimal for body composition or performance. For anyone who exercises regularly, especially resistance training, 0.8 g/kg leaves significant muscle-building potential on the table.

A landmark 2017 meta-analysis by Morton et al. (British Journal of Sports Medicine), covering 49 studies and 1,800+ participants, found that 1.62 g/kg/day maximised muscle protein synthesis under energy-adequate conditions. Beyond this threshold, additional protein provides minimal extra benefit for muscle gain (though it remains safe and supports satiety).

Spread Protein Across Meals

Muscle protein synthesis (MPS) is stimulated by individual protein doses of 0.4–0.55 g/kg per meal. For an 80 kg person, that is 32–44 g of protein per meal. Spreading protein across 3–5 meals maximises the number of MPS "pulses" throughout the day — more effective than eating the same total in 1–2 very large meals.

💡 Target hitting 30–40 g of protein at each main meal. This optimises the muscle protein synthesis response per meal while also contributing to satiety — making adherence to a calorie-controlled diet much easier.

Best High-Protein Foods

Chicken breast: 31 g per 100 g cooked
Greek yogurt (0%): 10 g per 100 g
Cottage cheese: 11 g per 100 g
Eggs: 6 g per large egg
Tuna (canned): 26 g per 100 g
Lean beef (mince 5%): 26 g per 100 g cooked
Whey protein: 20–25 g per scoop
Lentils: 9 g per 100 g cooked (plant-based)
Tofu (firm): 8–12 g per 100 g

Calculate Your Daily Protein Target

Get a personalised protein recommendation based on your body weight, goal, and training intensity.

Use the Protein Intake Calculator →

Frequently Asked Questions

In healthy adults, studies show protein intakes up to 4.4 g/kg/day are safe with no adverse effects. The practical concern is replacing other nutrients — very high protein diets can crowd out carbohydrates needed for training performance. 2.4 g/kg is a practical upper limit for most.

Total daily protein intake matters far more than timing. That said, having protein within 2 hours of training (before or after) provides a modest benefit. The "anabolic window" is not 30 minutes — it is several hours wide.

Plant proteins are generally less digestible and lower in leucine (the key anabolic amino acid). Vegans and vegetarians should aim for the higher end of protein targets (2.0–2.4 g/kg) and combine protein sources to ensure complete amino acid coverage (e.g., rice + legumes).

Your body absorbs essentially all ingested protein — the question is whether it is used for muscle protein synthesis (MPS) or oxidised for energy. MPS responds optimally to 0.4–0.55 g/kg per meal (~30–44 g for an 80 kg person). Excess protein in a single meal is not wasted but provides diminishing MPS returns.

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