28 Importantly, the risk persisted despite the improvement regarding traditional cardiovascular risk factors such as hypertension, dyslipidemia or diabetes
Red meat, poultry, and fish are the best dietary sources of l-carnitine
Additionally, methionine is a rate-limiting amino acid for protein synthesis and produces cysteine, a precursor to glutathione and taurine (2)
This deficiency can occur as a primary one due to genetic disorder that disrupts carnitine transport, or as a secondary one coming from problems such as malnutrition, certain medical conditions, or the intake of particular medications
Carnitine is abundant in animal food sources, especially red meat