For those of us with impaired sulfoxidation, knowing what's high in sulfur is critical.

• Garlic, onions, and all of the allium family
• Grains
  • methionine: corn, sunflower seeds, oats, chocolate, cashews, walnuts, almonds, sesame seeds (in that order).
  • cysteine: oats, corn (corn grits are higher than chicken, see Sulfur in Human Nutrition and Applications in Medicine, by Stephen Parcell, ND. Published by Thorne Research. [PDF].)
  • MSM: corn
• Legumes, including carob and jicama (alfalfa: MSM)
• Red meats
• eggs
  • of chicken
  • [of duck maybe less so?]
• Nuts & seeds
• Broccoli and all cole-family (brassica) vegetables. This includes cabbages, pak choi, mustard, and watercress.
• Asparagus
• Coconut
• Avocado (high in glutathione, which breaks down during digestion, yielding cysteine)
• Watermelon (also high in glutathione)
• Swiss Chard
• Parsley
• Sweet potatoes and "yams" (American yams, Genus Ipomoea, not Dioscorea, which the rest of the world calls "yams") - a sulfur compound in this tuber chelates heavy metals. [Need documentation on this.]
• Bananas
• Tomatoes (MSM)
• Tea & coffee: MSM
• Dairy products (Cows' milk: MSM. other milks?)
• Whey proteins (high in cysteine & methionine)
• Amino acids: cysteine, methionine
• Thiamin / Thiamine / Vitamin B1 / aneurine
• Biotin, Vitamin B7 or Vitamin H

For More Information

• Sulfur Metabolism
• Introduction to Amino Acids
• Cysteine Status - a compilation of notes from selected Yahoo! groups on the subjects of Autism and Mercury, on the OnibasuWiki, an independent archiving system for improving searches.