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Health Benefits of Glutathione

Glutathione is a tripeptide made up of the amino acids glutamic acid, cysteine, and glycine. It is a powerful antioxidant that plays a crucial role in protecting cells from oxidative stress and maintaining the immune system.

Glutathione is naturally produced by the body and found in almost every cell. However, factors such as aging, stress, poor diet, and exposure to toxins can decrease the body's production of glutathione. This has led some people to consider taking glutathione supplements.

While there is some evidence to suggest that glutathione supplementation may have potential benefits for certain conditions, the research is limited and inconclusive. Some studies have suggested that glutathione may improve liver function in people with liver disease, reduce oxidative stress in people with certain types of cancer, and improve insulin resistance in people with type 2 diabetes. However, more research is needed to confirm these findings.

While glutathione is primarily known for its role as an antioxidant and its potential benefits for liver function, there is some evidence to suggest that it may also play a role in maintaining gut health.

The gut is home to trillions of bacteria, collectively known as the gut microbiome. A healthy gut microbiome is essential for overall health, as it helps to digest food, produce vitamins, and support immune function. However, disruptions to the gut microbiome, such as through the use of antibiotics or a poor diet, can lead to dysbiosis (an imbalance of gut bacteria) and contribute to a range of health issues.

One study published in the journal Gut Microbes found that glutathione plays a key role in modulating the gut microbiome. Specifically, the study found that glutathione helps to promote the growth of beneficial bacteria, while suppressing the growth of harmful bacteria.

Another study published in the Journal of Nutritional Science and Vitaminology found that glutathione supplementation may improve gut barrier function. The gut barrier is a protective layer of cells that lines the intestinal tract and helps to prevent harmful substances from entering the bloodstream. Dysfunction of the gut barrier can lead to increased inflammation and a range of health issues. The study found that glutathione supplementation helped to improve gut barrier function in rats with induced colitis.

While these studies suggest that glutathione may have potential benefits for gut health, more research is needed to fully understand the mechanisms involved and the extent of these benefits.

In summary, while the evidence is limited, there is some indication that glutathione may play a role in maintaining gut health by modulating the gut microbiome and improving gut barrier function. 


  1. Wang et al. Glutathione Modulates the Composition of Intestinal Microbiota and Prevents Mucosal Inflammation in Mice Fed a High-Fat Diet. Gut Microbes. 2020; 11(5): 1285-1300. doi: 10.1080/19490976.2020.1780653.
  2. Moriwaki et al. Oral administration of glutathione improves the intestinal mucosal barrier function of rat small intestine. J Nutr Sci Vitaminol. 2012; 58(3): 216-223. doi: 10.3177/jnsv.58.216.
  3. Richie JP Jr. et al. "Randomized controlled trial of oral glutathione supplementation on body stores of glutathione." Eur J Nutr. 2015;54(2):251-63.
  4. Lomaestro BM. "Glutathione in health and disease: pharmacotherapeutic issues." Ann Pharmacother. 1995;29(12):1263-73.
  5. Witschi A et al. "The systemic availability of oral glutathione." Eur J Clin Pharmacol. 1992;43(6):667-9.
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