Whey has dominated the market — but it's not the only complete protein, nor the best option for everyone. There are real alternatives with equally good or better nutritional profiles.
Lactose intolerance, preference for plant-based sources, animal ethics, or simply tiredness of "whey shakes" — there are many legitimate reasons to seek alternatives. The good news? There are real alternatives, with nutritional profiles as good (or better) than whey — and in the form of real food, not supplements.
Why whey dominated the market
Historically, whey became synonymous with "quality protein" for economic and scientific reasons: a complete protein with all essential amino acids, cheap to produce (a byproduct of cheese making), excellent absorption rate, and extensive scientific support. It's neither good nor bad — it's just the market. But the reality is that whey is not the only complete protein, and for many people, it's not even the best option.
How to measure protein quality: the industry uses two systems — PDCAAS (scale 0–1, where 1 = perfect protein) and DIAAS (a newer and more accurate version of PDCAAS, based on the real digestibility of each amino acid). Both are FAO/WHO benchmarks.
Whey alternatives — quality comparison
- All essential amino acids in ideal proportions
- Lactose-free — suitable for intolerant individuals
- Less processed than whey isolates
- Recognizable and familiar food base
- Egg allergies (rare but exist)
- Higher production cost
- Completely vegan and sustainable
- Free from common allergens (dairy-free, egg-free)
- Better amino acid profile than soy isolate
- Lower DIAAS — requires a larger quantity
- More "earthy" taste for some consumers
- Digestion may be more difficult for some
- Complete amino acid profile, high digestibility
- Much lower environmental footprint than conventional animal protein
- Rich in micronutrients (B12, iron, zinc)
- Allergen: caution for those with shellfish allergies
- Cultural acceptance still growing in Europe
What science says about muscle gains
Here's the most important answer: the difference between a protein with a DIAAS of 1.0 and one with a DIAAS of 0.90 is negligible in practice, especially if you consume enough.
A meta-analysis published in the British Journal of Sports Medicine (Morton et al., 2018), with 49 studies and 1,863 participants, concluded that what matters for muscle gains is the total amount of protein consumed (≥1.6g/kg/day), its distribution throughout the day, and consistency — not so much the specific source.[2] The EFSA approved that "protein contributes to the maintenance and growth of muscle mass" regardless of origin. If you consume egg protein consistently and in adequate amounts, the gains will be equivalent to those from whey.
3 practical reasons to choose whey alternatives
- 1 Lactose intolerance — isolated whey has less lactose than concentrated whey, but some people are still intolerant. Egg or plant protein completely eliminates this problem, without sacrificing protein quality.
- 2 Preference for whole foods — CORIAL Protein Pancakes combine egg protein with wheat flour — they are closer to "real food" than a 100% whey isolate. CORIAL Protein Oats combine oats and egg protein — a complete food matrix.
- 3 Variety and nutritional diversity — different protein sources bring different micronutrients. Varying between egg, plant, and insect protein throughout the week provides a broader spectrum of nutrients than relying exclusively on whey.
Quality protein — lactose-free, artificial isolate-free
CORIAL Protein Pancakes and Protein Oats are based on egg protein — DIAAS 1.13, whey-free, sweetener-free, in a real food format that everyone recognizes.
Explore the CORIAL rangeConclusion: the best protein is the one you consume consistently
The industry has invested heavily in branding whey as "the protein" — but science is clear: there are multiple sources with equivalent or superior nutritional quality. Egg, plant, or insect protein — what matters is consuming it in sufficient quantities, distributed throughout the day, consistently. Choose what best suits your lifestyle, your digestion, and your preferences. The "best" protein is the one you will actually eat, day after day.
Bibliographical References
- Stull VJ et al. (2023). "Effects of Insect Consumption on Human Health: A Systematic Review of Human Studies." Foods, 12(7):1415. MDPI
- Morton RW et al. (2018). "A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults." British Journal of Sports Medicine, 52(6):376–384. BJSM
- Patel S et al. (2024). "Unlocking the Potential of Insect-Based Proteins." Foods, 13(12):1846. PMC11203160
- FAO (2021). "Dietary Protein Scores Applying the PDCAAS and DIAAS Methods." FAO.org