5. Cysteine
Cysteine is responsible for maintaining healthy glutathione levels. It limits the amount of production of glutathione, which in turn helps improve the function of the immune system. While food that is rich in cysteine is hard to find, another amino acid called methionine helps in the production of cysteine. Food such as dairy, eggs, and fish will help produce methionine. 500mg pills, tablets, or capsules of L-cysteine are also available for sale, however, it’s not recommended since it may prove toxic to some individuals due to its effect on glutathione. Cysteine also helps create NAC, a powerful antioxidant that helps the body absorb nutrients from food which is good after exercising. Glutathione is also known to help every part of the body, including hair from toxic radicals in the environment.
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