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Ewp3.5

Egg White Protein Research

Mostly mechanism / observationalHigh safety

4 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most Egg White Protein studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from medium-quality randomised trials published 2009–2018 with a typical study size of 36 participants.

Based on 4 studies · 3 RCTs · 114 total participants

Confidence

Moderate

By outcome

Muscle strength & powerHigh-quality complete protein supporting lean-mass and strength gains with training · 8-12 weeks
Too few graded studies1 study
Weight managementHigh satiety and fat-free profile support appetite control during dieting · Acute-weeks
Too few graded studies1 study

Older research base

Newest study from 2018

20092018

1RCTn=36 · small study2009

Resistance training increased lean mass and decreased fat mass, but moderately higher egg-based protein intake did not further influence body-composition responses.

Iglay HB, Apolzan JW, Gerrard DE, et al. · J Nutr Health Aging (2009)

12-week resistance-training trial in 36 older adults at 0.9 vs 1.2 g/kg/day protein, higher intake from eggs
Lean mass rose and fat mass fell with training; total/LDL cholesterol decreased
Higher egg-based protein did not differentially enhance lean mass or fiber size at these intakes

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2In Vitro2018

Egg protein had a high essential-amino-acid content (32%) with ~7% leucine, exceeding plant-based isolates.

Gorissen SHM, Crombag JJR, Senden JMG, et al. · Amino Acids (2018)

Compared amino-acid composition of egg and other animal vs plant protein isolates by UPLC-MS/MS
Egg had high essential-amino-acid content (~32%) and ~7% leucine, far above plant isolates like rice and hemp
Confirms egg's reference-quality amino-acid profile for muscle protein synthesis

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3RCTn=30 · small study2012

Compared to a carbohydrate supplement, egg white protein was associated with changes in protein metabolites but not with significant changes in body composition or muscle strength over 8 weeks.

Hida A, Hasegawa Y, Mekata Y, et al. · Nutrients (2012)

8-week randomized double-blind trial in 30 female collegiate athletes: 15g egg white protein vs maltodextrin pre-training
Fat-free mass and 1RM strength increased in both groups; no significant between-group advantage for egg protein
Serum urea and citrulline rose only in the protein group, indicating amino-acid uptake; honest null on body composition

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4Crossovern=48 · small study2016

A high-protein egg-based breakfast produced greater overall satiety and reduced food intake at the subsequent meal compared with a low-protein cereal breakfast.

Bonnema AL, Altschwager DK, Thomas W, Slavin JL · Int J Food Sci Nutr (2016)

Randomized crossover trial in 48 healthy adults comparing egg-based breakfasts to a low-protein cereal breakfast
High-protein egg breakfast (30g) increased satiety and lowered postprandial glucose and later food intake
Supports egg protein's strong satiety and appetite-control effects

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View in Research Library

Egg White Protein Research

Mostly mechanism / observational

Moderately increased protein intake predominately from egg sources does not influence whole body, regional, or muscle composition responses to resistance training in older people.

Protein content and amino acid composition of commercially available plant-based protein isolates.

Effects of egg white protein supplementation on muscle strength and serum free amino acid concentrations.

The effects of the combination of egg and fiber on appetite, glycemic response and food intake in normal weight adults - a randomized, controlled, crossover trial.