can l carnitine causes elevated tsh pubmed Association between fatigue, peripheral serotonin, and L-carnitine in hypothyroidism and in chronic fatigue syndrome Thyroid hormone analogues and derivatives:

Pediatr Res 1986;20:806-9

Animal models of obesity and T2D as well show affected BCAA catabolism [75, 111, 112]: tissue-specific expression of BCAA-catabolic enzymes are shown to be dysregulated [23, 27, 79, 108, 113,114,115,116,117,118,119,120,121] especially in adipose tissue [75, 122] and liver [75, 113]

Identification of type 2 diabetes loci in 433,540 East Asian individuals

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DeCarli LM, Lieber CS: Fatty liver in the rat after prolonged intake of ethanol with a nutritionally adequate new liquid diet

MicroRNA-27a regulates lipid metabolism and inhibits hepatitis C virus replication in human hepatoma cells