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General description	Sulfur containing amino acids involved in methionine metabolism and DNA methylation.
Anti-aging role	Not applicable
Deficiency symptoms	Not applicable
Therapeutic doses	Not applicable
Maximum safe level	Not applicable
Contraindications	- vitamin B12 is necessary for normal conversion from homocysteine to methionine
Other remarks	- major independent risk factors for CVD - Hcy causes direct damage to the lining of the blood vessels, weakening them and opening them to accumulation of plaque. Hcy may be a thrombogenic agent that triggers the formation of blood clots. It was estimated that a 5 mmol / L increase in serum Hcy is associated with 60 - 80 % increased risk of CVD. - it has been linked to Alzheimer, Parkinson disease and osteoporosis

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