Sesame seeds, brazil nuts, fish, peppers, spinach

SAM synthesis

Leafy vegetables, sunflower seeds, baker's yeast, liver

Methionine synthesis

Meat, liver, shellfish, milk

Methionine synthesis

Meats, whole grain products, vegetables, nuts

Methionine synthesis

Popular dietary supplement pill; unstable in food

Enzymes transfer methyl groups from SAM directly to the DNA

Egg yolks, liver, soy, cooked beef, chicken, veal and turkey

Methyl donor to SAM

Wheat, spinach, shellfish, and sugar beets

Break down the toxic byproducts of SAM synthesis

Red wine

Removes acetyl groups from histones, improving health (shown in lab mice)

Soy, soy products

Increased methylation, cancer prevention, unknown mechanism

Broccoli

Increased histone acetylation turning on anti-cancer genes

A compound produced in the intestine when dietary fiber is fermented

Increased histone acetylation turning on 'protective' genes, increased lifespan (shown in the lab in flies)

Garlic

Increased histone acetylation turning on anti-cancer genes