While some studies suggest NAC may have beneficial effects in certain cancer settings, animal research has also found that NAC can accelerate tumor growth or metastasis under specific conditions.3 41 42 43 Current human evidence does not show that NAC causes cancer, but people with active cancer, a history of cancer, or those undergoing cancer treatment should discuss supplementation with their oncologist or healthcare provider before use
Additionally, repackagers should ask the manufacturer about the intended use of the ingredient
However, monitoring is essential in research protocols to track any persistent issues like malignancy risks, though not directly linked
Only doses that exceeded the maximum tolerated dose (MTD) (based on excess mortality secondary to IGF-1 induced hypoglycemia) caused skin and mammary tumors
Moderating or eliminating these dietary stressors reduces the oxidative burden on glutathione systems, allowing available glutathione to support cellular protection more effectively
