SupplementsNAC May Protect Stressed Pancreatic Cells but Disrupt Healthy Insulin Signaling
NAC is a popular antioxidant supplement, but its effects on insulin-producing pancreatic cells may depend on their condition. This review examines evidence across normal function, aging, obesity, and type 2 diabetes. When excessive oxidative stress damages cells, NAC can help protect them, preserve insulin release, and reduce scarring. However, healthy cells need some reactive oxygen molecules to signal when insulin should be released. Emerging evidence suggests excessive antioxidant exposure can disrupt that process and reduce insulin production. The takeaway is not that NAC always helps or always harms, but that dose and metabolic context matter. The abstract provides no numerical results or established dosing guidance. This summary is based on the abstract only, and the review does not establish that NAC supplementation causes diabetes or extends human lifespan.
