does l carnitine cause heart disease Comprehensive review of the expanding roles of the pool in metabolic physiology: beyond fatty acid oxidation | Journal of Translational Medicine Frontiers | Association between fatigue,

10.1074/jbc.272.27.16725

The importation of foods further complicates these issues

Several factors may hinder the absorption of natural food folate, e.g., partial release from the food matrix (incomplete liberation from cellular structures), destruction within the gastrointestinal tract, and incomplete hydrolysis of polyglutamates to monoglutamates (possibly mediated by partial inhibition of deconjugation enzymes by other dietary constituents such as organic acids)

Two of the most popular choices in this space are L-Carnitine and CLA (Conjugated Linoleic Acid)

A 2004 follow-up confirmed the fibroblast data and added observations on cell division capacity