Dietary l carnitine supplementation increases lipid deposition in the liver and muscle of yellow catfish (Pelteobagrus fulvidraco) through changes in lipid metabolism British Journal of Nutrition Cambridge Core Mitochondrial control of fuel switching via carnitine biosynthesis Science L Carnitine Tartrate SFI Health US Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link There's a molecule your gut quietly produces every time you eat red meat, eggs, or dairy, and most doctors never test for it. It's called TMAO. And it's been linked to a