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Vitamin D receptors and metabolizing enzymes are found in male reproductive tissues

J Pediatr 115:577582 Roe CR, Hoppel CL, Stacey TE, Chalmers RA, Tracey BM, Millington DS (1983) Metabolic response to carnitine in methylmalonic aciduria

Additionally, L-carnitine reduces blood sugar levels and improves insulin sensitivity

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Int J Obes (Lond) 2012;36:735743

This ensures that comparisons across time are aligned and actionable
