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Eaa6.0
EAAs Research
Likely helps
73 peer-reviewed studies
What the evidence says
Likely helps
EAAs appears to help in 9 of 10 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 2000–2026 with a typical study size of 42 participants.
Based on 73 studies · 10 meta-analyses · 41 RCTs · 8,539 total participants
Confidence
High confidence
What the studies found
9helped1didn't help· 63 more without graded effect data
By outcome
Lean body mass & muscle growthEnhanced muscle protein synthesis · Acute and cumulative
Likely helps45 studies
Muscle strength & powerEnhanced muscle protein synthesis · Acute and cumulative
Likely helps18 studies
Therapeutic & clinical
Probably helps18 studies
RecoveryFaster recovery between sessions · Acute
Mostly mechanism / observational15 studies
Weight management
Mostly mechanism / observational3 studies
Endurance & exercise performanceReduces muscle breakdown during prolonged exercise · During exercise · Supports protein synthesis and training adaptations · Ongoing
Too few graded studies2 studies
Energy & fatigueProvides substrate for energy production during exercise · During exercise
Too few graded studies2 studies
Cognitive function
Too few graded studies2 studies
By the numbers
Pulled from 44 studies with measurable effects
Likely real effects
80%
across studies
People studied
8,539
typical study: 42 people
Strongest designs
51
10 pooled, 41 randomised
Showed benefit
90%
9/10 studies
How long studies ran
1–3 months
5
3+ months
3
Populations Studied
Adults3
Older adults with sarcopenia3
Young adults2
Untrained young adults2
Active research area
42 studies in the last 5 years · Latest meta-analysis: 2026
200020132026
1Muscle atrophy reduction in quadriceps femorisMeta-Analysisn=903 · large study2025
In plain English: Protein and amino acid supplementation can reduce muscle atrophy in hip or knee arthroplasty patients.
Khani Y et al. · Journal of orthopaedic surgery and research (2025)
Large benefit
← WorseNo effectBetter →
Essential amino acids (EAA) significantly reduced muscle atrophy in quadriceps femoris muscle mass (SMD: 0.69; 95% CI: 0.44 to 0.95) and hamstring muscle mass (SMD: 1.04; 95% CI: 0.52 to 1.55).
Protein and amino acid supplementation can reduce muscle atrophy in hip or knee arthroplasty patients.
While effects on muscle strength and function are mixed, intravenous supplementation offers benefits.
2Kidney functionMeta-Analysisn=1,574 · large study2022
In plain English: The very low-protein diets supplemented with nitrogen-free analogs had significantly better kidney functions results compared to the conventional low-protein diets in subjects with chronic kidney disease.
Yang W · Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy (2022)
The very low-protein diets supplemented with nitrogen-free analogs had significantly better kidney functions results compared to the conventional low-protein diets in subjects with chronic kidney disease.
Further studies are required to validate these findings.
3Lean body massMeta-Analysisn=910 · large study2021
In plain English: A mixture of macronutrients and an intervention duration as long as 48 weeks had some significant effects on improving lean body mass of patients undergoing dialysis.
Lu Y et al. · Journal of advanced nursing (2021)
A mixture of macronutrients and an intervention duration as long as 48 weeks had some significant effects on improving lean body mass of patients undergoing dialysis.
No effect of oral nutritional supplement on muscle strength or physical performance were found but with limited evidence.
4Lean body massMeta-Analysisn=596 · large study2022
In plain English: Whey protein supplementation significantly improved body composition via increases in lean body mass, without influencing fat mass, body mass and body fat percentage.
Piri Damaghi M et al. · The British journal of nutrition (2022)
Noticeable benefit
← WorseNo effectBetter →
Likely real
Thus, we sought to perform a meta-analysis of published randomised clinical trials that examined the effect of whey protein supplementation and soya protein supplementation on body composition (lean body mass, fat mass, body mass and body fat percentage) in adults.
We found a significant increase in lean body mass after whey protein supplementation (weighted mean difference (WMD: 0·91; 95 % CI 0·15, 1·67; P = 0·019).
We observed no significant change between whey protein supplementation and body mass, fat mass and body fat percentage.
5L-carnosine concentration change during muscle growthSystematic Review2024
In plain English: Understanding the mechanisms that regulate skeletal muscle mass will help in developing effective treatments for muscle weakness.
Baumert P et al. · Journal of cachexia, sarcopenia and muscle (2024)
Large benefit
← WorseNo effectBetter →
Likely real
Like the hypertrophy stimulation with IGF-1 in myotubes in vitro, the concentration of the dipeptide l-carnosine was decreased by 26.6% (P = 0.001) during skeletal muscle growth in vivo.
However, phosphorylated sugar (glucose-6-phosphate, fructose-6-phosphate or glucose-1-phosphate) decreased by 32.2% (P = 0.004) in the overloaded muscle in vivo while increasing in the IGF-1-stimulated myotubes in vitro.
We demonstrated that labelled carbon from [U-13C6]glucose is increasingly incorporated by ~13% (P = 0.001) into the non-essential amino acids in hypertrophying myotubes, which is accompanied by an increased depletion of media serine (P = 0.006).
6Health effects of insect consumptionSystematic Review2023
In plain English: Insect protein is an adequate protein source with promising health benefits; however, further research is needed to fully understand its potential and optimise its inclusion into the human diet.
Cunha N et al. · Nutrients (2023)
The effects on inflammatory markers and microbiota composition were inconclusive and the studies did not show significant effects on appetite regulation.
Allergenicity assessments revealed a sensitisation and cross-reactivity between insect allergens and known allergens.
A partial reduction of cross-allergenicity was observed via thermal processing.
7Post-exercise rating of perceived exertionMeta-Analysisn=206 · medium study2020
In plain English: Citrulline supplements significantly reduced post-exercise RPE and muscle soreness without affecting blood lactate levels.
Rhim HC et al. · Journal of sport and health science (2020)
Likely real
Citrulline supplementation significantly reduced RPE (n = 7, p = 0.03) and muscle soreness 24-h and 48-h after post-exercise (n = 7, p = 0.04; n = 6, p = 0.25, respectively).
However, citrulline supplementation did not significantly reduce muscle soreness 72-h post-exercise (n = 4, p = 0.62) or lower blood lactate levels (n = 8, p = 0.17).
8Muscle strength and performance measuresSystematic Reviewn=167 · medium study2020
In plain English: The limited quality of the studies makes firm conclusions difficult, however protein and/or EAA supplementation may improve important outcome measures related to sarcopenia.
Nichols S et al. · European journal of nutrition (2020)
The limited quality of the studies makes firm conclusions difficult, however protein and/or EAA supplementation may improve important outcome measures related to sarcopenia.
High-quality randomised controlled studies are needed.
In plain English: Physical function was also influenced by beef and nutrients found in beef.
Hawley AL et al. · Meat science (2022)
Physical function was also influenced by beef and nutrients found in beef.
Eight of the studies found focused on specific nutrients found in beef, and not beef itself in older adults with one or more chronic diseases.
This study identified a need for further research regarding the effect of beef and nutrients found in beef on defined functional outcomes of wellbeing in healthy adults ≥50 years of age.
10Mood and emotional functioning improvementSystematic Review2021
In plain English: In order to estimate the optimum amount of TRP intake more accurately, further studies need to be conducted with more appropriate settings of intake period, intake frequency, and intake method.
Kikuchi AM et al. · Journal of dietary supplements (2021)
This suggests that TRP intake may be an effective approach to decrease anxiety and increase positive mood in healthy individuals.
On the other hand, the effectiveness of TRP for aggressive feelings was not recognized.
Reviewing these 11 RCTs, we concluded that taking 0.14-3 g of TRP per day in addition to the usual meal can be expected to improve the mood of healthy individuals.
11Appendiceal/skeletal muscle mass maintenanceSystematic Reviewn=16 · very small study2023
Hernández-Lepe MA et al. · Nutrients (2023)
A total of 16 studies met the inclusion criteria and were included in this systematic review.
Regular resistance exercise together with daily essential amino acids or whey protein and vitamin D supplementation improve the maintenance or gains in appendiceal/skeletal muscle mass and total lean mass in sarcopenic older adults.
The data suggest a synergistic effect not only on the primary outcome, but also on other variables such as strength, speed, stability, and other indicators of quality of life.
13Muscle mass and muscle functionSystematic Reviewn=17 · very small study2017
In plain English: Physical exercise has a positive impact on muscle mass and muscle function in healthy subjects aged 60 years and older.
Beaudart C et al. · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA (2017)
In 79% of the studies (27/34 RCTs), muscle mass increased with exercise but an additional effect of nutrition was only found in 8 RCTs (23.5%).
Muscle strength increased in 82.8% of the studies (29/35 RCTs) following exercise intervention, and dietary supplementation showed additional benefits in only a small number of studies (8/35 RCTS, 22.8%).
Finally, the majority of studies showed an increase of physical performance following exercise intervention (26/28 RCTs, 92.8%) but interaction with nutrition supplementation was only found in 14.3% of these studies (4/28 RCTs).
14Muscle mass improvement with leucineMeta-Analysisn=15 · very small study2021
In plain English: Best evidence is available to recommend leucine, because it has a significant effect on muscle mass in elderly people with sarcopenia.
Gielen E et al. · Nutrition reviews (2021)
Best evidence is available to recommend leucine, because it has a significant effect on muscle mass in elderly people with sarcopenia.
Protein supplementation on top of resistance training is recommended to increase muscle mass and strength, in particular for obese persons and for ≥ 24 weeks.
Effects on sarcopenia as a construct were not reported in the included reviews.
In plain English: Overall, this review supports a shift from calorie-centered nutrition toward a signal-based, quality-oriented approach, based on personalized needs, that integrates metabolic status, protein quality, and AA signaling to preserve lean body mass and improve clinical outcomes.
Corsetti G, Pasini E. · Nutrients (2026)
Energy provision alone is insufficient to prevent muscle loss when EAA availability is inadequate, while high protein intake without sufficient energy fails to sustain anabolism due to anabolic resistance.
Evidence indicates that protein quality and the balanced availability of all EAAs are more critical for lean mass preservation than total caloric intake alone.
Strategies based solely on calorie provision or protein quantity are therefore limited, whereas targeted EAA supplementation may partially overcome anabolic resistance in selected hypercatabolic conditions.
Kamalakannan M et al. · Journal of the science of food and agriculture (2026)
Moreover, regulatory inconsistencies across global food safety frameworks complicate the commercialization process.
Additionally, evaluating their role in muscle protein synthesis, endurance enhancement, and post-exercise recovery will determine their efficacy as sustainable alternatives in strength- and muscle-building regimens.
This review explores the nutritional composition of edible insects, their environmental benefits, and their potential health risks.
17Cognitive function improvementSystematic Reviewn=353 · medium study2026
In plain English: Larger, rigorously designed clinical trials are needed to establish clearer causal relationships and optimize therapeutic strategies.
Majid H, Islam SU, Kohli S, Nidhi. · Nutritional neuroscience (2026)
Analysis showed that 5 studies found no significant changes in cognitive function after BCAA administration, while 3 reported improvements.
Conclusion: BCAA supplementation for cognitive health is influenced by dosage, duration, and underlying health conditions.
Some studies suggest potential detrimental effects, while others find no significant impact.
In plain English: This review examines the interplay between EAAs and CD pathogenesis, highlighting their roles in immune modulation, gut barrier maintenance, systemic metabolic effects, and potential as disease biomarkers.
Bakhtiari S et al. · Critical reviews in clinical laboratory sciences (2026)
EAA imbalances may serve as biomarkers for disease activity, severity, and treatment response.
Altered plasma and fecal amino acid profiles correlate with disease progression, offering diagnostic and monitoring potential.
Addressing EAA deficiencies through targeted supplementation or dietary interventions could enhance intestinal healing, mitigate complications, and improve outcomes beyond a gluten-free diet (GFD).
Mukhtiar A et al. · Zeitschrift fur Naturforschung. C, Journal of biosciences (2026)
Future research should focus on optimizing inclusion levels in animal and human diets, elucidating molecular mechanisms of action, and advancing green extraction technologies to enhance its efficacy and sustainability.
This study highlights the multifaceted applications of M. oleifera across diverse sectors and its potential to revolutionize sustainable agriculture, healthcare, and environmental conservation.
Addressing existing challenges through cutting-edge research and technological innovation will unlock its full potential as a key natural resource for enhancing global food security, promoting sustainable development, and pioneering pharmaceutical breakthroughs.