Nutrition & DietLeucine Found to Boost Mitochondrial Energy by Blocking Protein Breakdown
Researchers at the University of Cologne have discovered that leucine, an essential amino acid found in meat, dairy, beans, and lentils, can directly boost mitochondrial energy production. The study, published in Nature Cell Biology, shows that leucine works by reducing the activity of a cellular quality-control protein called SEL1L, which normally flags mitochondrial surface proteins for destruction. By protecting these proteins, leucine allows mitochondria to operate more efficiently and ramp up energy output. This reveals a previously unknown link between dietary protein intake and cellular energy regulation — one with potential implications for metabolic health, cancer biology, and strategies to preserve cellular function as we age.
