This might be because their meals are less healthy or because they have less stomach acid, which is required for B12 absorption
A 2016 meta-analysis showed that a low-calorie diet combined with carnitine supplementation promotes the oxidation of fat, spares muscle mass, and may also speed the rate of weight loss
Inflammopharmacology 14:214221 Brcic L, Brcic I, Staresinic M, Novinscak T, Sikiric P, Seiwerth S (2009) Modulatory effect of gastric pentadecapeptide BPC 157 on angiogenesis in muscle and tendon healing
Conversely, this may protect mitochondria from lipid toxicity caused by fatty acid oxidation failure and alleviate endoplasmic reticulum stress (Reference Xu, Huang and Hu36)
10.2337/db07-1056 27 LiuJ
Grape Seed Extract supports the strength of tissues throughout the body