Most of amino acids are friendly but the researcher found homocysteine as major culprit of increased risk of heart attack. Homocysteine trigger blood clots and other substance that block the arteries. But the treatment of elevated homocysteine is easy. Just consuming adequate amounts of the B vitamins- espacially Vitamin B6, B12 and Vitamin B9 (Folic acid) efficiently lowers the amount of homocysteine in the blood. The combination of folic acid 400 mcg with vitamin B6, B12 with mix green leafy veggies are good treatment of elevated homocysteine and it will keep you away from heart attack and other heart problems.