I just finished my homocysteiene page! I learned about this issue the hard way, when my father was diagnosed with lung cancer.
It seems that there is a gene called MTHFR which results in undermethylation of the amino acid cysteine. This causes homocysteiene to build up in the body and is a promoter of heart disease and cancer.
The way to address this problem is with a nutritional supplement called a "methyl donor."
Check out my web page here:
Dangers of High Homocystiene Levels
Cholesterol and Vitamin D – The Sunshine Connection
6 months ago