¿Rompe BCAAs (branched-chain amino acids) un ayuno?
BCAAs (branched-chain amino acids) rompe un ayuno. Proporciona calorías significativas o desencadena una respuesta de insulina que termina el estado metabólico en ayunas.
Calorías
~20–40 kcal per serving (4–8 g BCAAs)
Por qué — la lógica de calorías e insulina
BCAAs — leucine, isoleucine, and valine — are amino acids that directly stimulate insulin secretion, particularly leucine. They also directly activate the mTOR pathway, which suppresses autophagy. Even a small BCAA serving provides meaningful amino acids that signal an anabolic (fed) state to the body.
¿Depende de tu objetivo de ayuno?
BCAAs break a fast for autophagy (direct mTOR activation from leucine) and for strict metabolic fasting (insulin response). For muscle-preservation goals during weight-loss fasting, some practitioners take BCAAs around workouts despite this, accepting that the fast is technically broken. If your goal is pure autophagy or maximum metabolic benefit, skip BCAAs during the fasting window.
Preguntas frecuentes
- Do BCAAs break a fast?
- Yes. BCAAs contain amino acids that stimulate insulin release and activate mTOR, directly suppressing autophagy and ending a metabolic fast. They are best taken within the eating window.