Glutathione is an antioxidant that has been used as a mercury chelator. Avocados are one of the richest sources of glutathione.  Glutathione is also available in supplement form. However, taking glutathione supplements does not necessarily boost cellular glutathione levels since it can break down in the digestive tract before it reaches the cells. It is best to supplement with glutathione precursors. Precursors are what the body uses to make glutathione.

Note: Vitamin B-6 is needed to convert certain precursors into glutathione and should be used in conjunction with them.

Studies have shown that the Indian curry spice (curcumin) increases glutathione. Another food source of glutathione precursors is undenatured whey protein.  People who normally have a histamine reaction to milk or cheese can often eat whey without a problem.

N-acetyl-cysteine (NAC), which is available in supplement form, has been used clinically as a precursor to Glutathione. In experiments where animals were exposed to mercury vapour, NAC increased animal survival time and decreased the mercury levels in blood, lung, and kidney tissues.  L-rnethionine is a sulphur containing amino acid, which also increases glutathione in the body.

Note: Another detrimental effect of MSG is that it reduces glutathione levels.

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