In reality, their mechanisms are different
Betaine serves as an osmolyte and methyl group donor, playing a role in the re-methylation of homocysteine into methionine, a precursor of S-adenosylmethionine (SAM), essential for numerous methylation reactions, including DNA epigenetics ( De novo PC synthesis begins with the phosphorylation of choline by the enzyme choline kinase (ChoK) into phosphocholine ( Figure 2 )
(2013, Nature Medicine) found that L-carnitine is metabolized by intestinal microbiota to trimethylamine-N-oxide (TMAO), a proatherogenic substance associated with increased CVD risk
(ii) In human studies, this includes differences in race and patient age, as well as sex, diet, and drug use, which can cause changes in the composition of the gut bacterial microbiota and alter the relationship between plasma TMAO levels and atherosclerosis
Men with higher baseline lean mass may tolerate 2ml weekly protocols more readily, but efficacy doesnt scale linearly with dose response depends more on hepatic lipid burden and dietary structure than sex or body size
TMA, a forgotten uremic toxin, but not TMAO, is involved in cardiovascular pathology
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