When mammalian cells acquire ATP synthesis abnormalities, mitochondria initiate a high-energy stress response, stimulating the AMPK/PGC-1 pathway and undergoing changed mitochondrial biogenesis [26]
Certain bacteria extract more calories from food, making weight gain easier
A., Vignozzi, L., & Wierman, M
J Neural Transm 86:135146 Smeland OB, Meisingset TW, Borges K, Sonnewald U (2012) Chronic acetyl-l-carnitine alters brain energy metabolism and increases noradrenaline and serotonin content in healthy mice
There have also been reports of gallbladder disease, including cholelithiasis (gallstones) and cholecystitis, possibly related to rapid weight loss
Ferreira GC & McKenna MC (2017) L-Carnitine and Acetyl-L-carnitine Roles and Neuroprotection in Developing Brain