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Vitamin B-12 is naturally available in meats and in small amounts from various plant foods and different types of seaweed

Methionine is an essential amino acid obtained primarily from dietary animal protein, such as meat, poultry, fish, eggs, and dairy products.1 An elevated level of homocysteine in the body is known as hyperhomocysteinemia, a condition that is linked to the development of many chronic disorders, including CVD, diabetes, renal disease, and neurocognitive disorders

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Neurobiol Dis 94:169178 Miotto G, Rossetto M, Di Paolo ML, Orian L, Venerando R, Roveri A et al (2020) Insight into the mechanism of ferroptosis inhibition by ferrostatin-1