Methionine

Methionine and choline deficiency in mice produces fatty liver without weight gain, insulin resistance, or diabetes, isolating the deficiency as the direct cause. Muscle meat is very high in methionine, a sulfur-containing amino acid. Methionine is an essential amino acid that serves as a precursor to glutathione, the body's most powerful antioxidant. Glutathione is a sulfur-based compound that neutralizes chemicals, heavy metals, and other toxins. Regular bone broth consumption helps balance the methionine-heavy amino acid profile of a muscle-meat diet. Without adequate methionine, glutathione production falls and the liver's detoxification capacity is impaired. Consuming excess methionine without its balancing amino acids can negatively affect metabolic pathways. Dietary sources of methionine include beef, chicken, pork, fish, eggs, and nuts.