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Bc6.0
BCAAs – Forschung
Gemischte Evidenz
231 begutachtete Studien
Was die Evidenz sagt
Gemischte Evidenz
Die Studien sind gespalten: BCAAs half in 6 von 14 Fällen, der Rest war ergebnislos oder zeigte keinen Nutzen.
Die meiste Evidenz stammt aus hochwertigen Meta-Analysen und randomisierten Studien, veröffentlicht 1979–2026 mit einer typischen Studiengröße von 72 Teilnehmenden.
Basierend auf 231 Studien · 31 Meta-Analysen · 165 RCTs · 22,885 Teilnehmende insgesamt
Konfidenz
Hohe Konfidenz
Was die Studien gefunden haben
6geholfen6unklar2nicht geholfen· 217 weitere ohne bewertete Effektdaten
Nach Outcome
Therapeutic & clinical
Hilft wahrscheinlich68 Studien
Lean body mass & muscle growthUnterstützung der Muskelproteinsynthese · Sofort bis 2 Stunden
Hilft vermutlich37 Studien
RecoveryVerringerter Muskelkater · 24-48 Stunden
Überwiegend Mechanismus / Beobachtung33 Studien
Muscle strength & powerUnterstützung der Muskelproteinsynthese · Sofort bis 2 Stunden
Überwiegend Mechanismus / Beobachtung11 Studien
Glucose & metabolic
Überwiegend Mechanismus / Beobachtung10 Studien
Heart & blood pressure
Überwiegend Mechanismus / Beobachtung7 Studien
Energy & fatigueReduziert die zentrale Ermüdung bei längerer körperlicher Belastung · Während des Trainings
Überwiegend Mechanismus / Beobachtung7 Studien
Endurance & exercise performanceVerringerte mentale Ermüdung während des Trainings · Während des Trainings · Moderate Verringerung der zentralen Ermüdung bei Ausdauerbelastung · Fortlaufend
Überwiegend Mechanismus / Beobachtung6 Studien
Safety profile
Überwiegend Mechanismus / Beobachtung4 Studien
Liver health
Zu wenige bewertete Studien1 Studie
In Zahlen
Aus 37 Studien mit messbaren Effekten gezogen
Wahrscheinlich echte Effekte
57%
über Studien hinweg
Untersuchte Personen
23k
typische Studie: 72 Personen
Stärkste Designs
196
31 gepoolt, 165 randomisiert
Zeigte Nutzen
43%
6/14 Studien
Wie lange Studien liefen
1–3 Monate
1
3+ Monate
3
Untersuchte Populationen
General population5
Exercise participants2
Old patients with sarcopenia1
Prediabetes and diabetes patients1
Aktives Forschungsgebiet
91 Studien in den letzten 5 Jahren · Neueste Meta-Analyse: 2026
197920022026
1Sarcopenia treatment and mitochondrial functionSystematische Übersichtn=1,337 · large study2023
Cochet C et al. · Nutrients (2023)
Mitochondrial function was significantly improved by the administration of BCAA alone (1 RCT) or in association with vitamin D (1 RCT).
BCAA alone (2 RCTs) or PUFA (1 RCT) were not effective in improving muscle health.
In conclusion, BCAA in association with vitamin D may be useful in the treatment of sarcopenia and boost mitochondrial bioenergetic and redox activity.
3Cardiovascular disease riskMeta-Analysen=2,806 · very large study2022
Einfach gesagt: Evidence suggests that elevated concentrations of circulating Isoleucine were associated with increased risks of CVD, independent of traditional risk factors.
Wang Y et al. · Atherosclerosis (2022)
Spürbar Schaden
← SchlechterKein EffektBesser →
Nine prospective studies were meta-analyzed and highlighted a 10% higher risk of CVD per study-specific SD difference for Isoleucine (pooled relative risk 1.10 [1.03-1.18]; I2 = 63.5%).
Evidence suggests that elevated concentrations of circulating Isoleucine were associated with increased risks of CVD, independent of traditional risk factors.
4Type 2 diabetes riskMeta-Analysen=8,000 · very large study2016
Einfach gesagt: In studies using high-throughput metabolomics, several blood amino acids appear to be consistently associated with the risk of developing type 2 diabetes.
Guasch-Ferré M et al. · Diabetes care (2016)
Spürbar Nutzen
← SchlechterKein EffektBesser →
Glycine and glutamine were inversely associated with type 2 diabetes risk (0.89 [0.81-0.96] and 0.85 [0.82-0.89], respectively; both I(2) = 0.0%).
In studies using high-throughput metabolomics, several blood amino acids appear to be consistently associated with the risk of developing type 2 diabetes.
5Peripheral fatigue and hormone responsesMeta-Analysen=146 · medium study2024
Einfach gesagt: The advantages of BCAA administration relate to a reduction in cortisol concentration after 2h and ameliorated muscle function because of a probable attenuation of fatigue substances immediately after exercise.
Pourgharib Shahi MH et al. · Minerva endocrinology (2024)
The advantages of BCAA administration relate to a reduction in cortisol concentration after 2h and ameliorated muscle function because of a probable attenuation of fatigue substances immediately after exercise.
6Seizure activitySystematische Übersichtn=2,045 · very large study2019
Einfach gesagt: The contradictory effects of BCAAs on seizure activity likely reflect differences in the complex mechanisms that underlie seizure disorders.
Gruenbaum SE et al. · CNS drugs (2019)
The contradictory effects of BCAAs on seizure activity likely reflect differences in the complex mechanisms that underlie seizure disorders.
Some of these mechanisms are likely mediated by BCAA's effects on glucose, glutamate, glutamine, and ammonia metabolism, activation of the mechanistic target of rapamycin signaling pathway, and their effects on aromatic amino acid transport and neurotransmitter synthesis.
We propose that a better understanding of mechanisms by which BCAAs affect seizures and neuronal viability is needed to advance the field of BCAA supplementation in epilepsy.
13Muscle performance recoveryMeta-Analysen=479 · medium study2021
Einfach gesagt: BCAA does not accelerate recovery for muscle performance.
Doma K et al. · Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme (2021)
Kein klarer Effekt
← SchlechterKein EffektBesser →
Borderline
In total, 25 studies were included, consisting of 479 participants (age 24.3 ± 8.3 years, height 1.73 ± 0.06 m, body mass 70.8 ± 9.5 kg, females 26.3%).
However, no significant differences were identified between the BCAA and placebo conditions for muscle performance at 24 or 48 hours post-exercise (SMD = 0.08 ≤ d ≤ 0.21; p > 0.05).
However, the potential benefits of BCAA for muscle performance recovery is questionable and warrants further investigation to determine the practicality of BCAA for ameliorating muscle damage symptoms in diverse populations.
Einfach gesagt: Further studies are warranted to confirm the effects of the supplements on football players, to identify the appropriate dosage of the supplements and also to determine their mechanism of action.
Allahyari P et al. · Journal of basic and clinical physiology and pharmacology (2025)
B vitamins reduce the level of blood lactate in the recovery periods.
Vitamin E and vitamin C may improve performance by decreasing oxidative stress and increasing the antioxidant capacity and oxygen delivery to exercising skeletal muscles.