Nutrition
Plant-Based Protein for Muscle: Is It as Good as Meat?
Published October 20, 2026
Yes: with enough total protein (around 0.7 g per lb / 1.6 g/kg of body weight per day), a plant-based diet supports muscle growth as well as an omnivorous one. In a 12-week trial, young vegan and omnivorous men eating the same amount of protein gained similar muscle mass and strength from resistance training (Hevia-Larraín et al., 2021). The keys are quantity and variety.
Why plant protein gets a bad rap
- Slightly less leucine, the amino acid that switches on muscle building.
- Some sources are low in one amino acid: lysine in grains, methionine in legumes.
- Slightly lower digestibility.
Fixes: eat a bit more protein overall and mix grains and legumes across the day (not necessarily in the same meal).
Best plant protein sources
| Food | Serving | Protein (approx.) |
|---|---|---|
| Firm tofu | 5 oz (150 g) | 20-22 g |
| Tempeh | 5 oz (150 g) | 28 g |
| Cooked lentils | 1 cup (200 g) | 18 g |
| Cooked chickpeas | 1 cup (165 g) | 15 g |
| Seitan | 3.5 oz (100 g) | 25 g |
| Edamame | 1 cup (155 g) | 17 g |
| Oats | ¾ cup (60 g) | 8 g |
| Hemp seeds | 3 tbsp (30 g) | 9-10 g |
| Pea protein powder | 1 scoop (30 g) | 22-24 g |
| Soy milk | 1 cup (240 ml) | 7-8 g |
How much per day?
The leading meta-analysis found gains in muscle plateau around 1.6 g/kg/day on average (Morton et al., 2018). On a fully plant-based diet, aim a little higher, 1.6-2 g/kg (0.7-0.9 g/lb). For 165 lb (75 kg): about 120-150 g.
Vegan day for a lifter (~135 g protein)
| Meal | Food | Protein |
|---|---|---|
| Breakfast | Oats, soy milk, hemp seeds, pea protein | 40 g |
| Lunch | Lentil bowl with quinoa and vegetables | 28 g |
| Snack | Edamame + soy yogurt | 22 g |
| Dinner | Tofu stir-fry with rice | 30 g |
| Evening | Seitan wrap (half) | 15 g |
Plant protein powders compared
| Powder | Pros | Cons |
|---|---|---|
| Pea | Lysine-rich, good texture | Earthy taste |
| Soy | Complete protein | Common allergen |
| Rice | Easy to digest | Low in lysine alone |
| Pea + rice blend | Amino acid profile close to whey | — |
None is mandatory. Compare with dairy: whey protein. Meal ideas: high protein meals.
Nutrients to watch
On a fully plant-based diet, vitamin B12 must be supplemented; iron, omega-3s, iodine, calcium and vitamin D deserve attention. Check with a doctor or registered dietitian, especially for teens, pregnancy or older adults.