When you consume NAC, your body breaks it down into cysteine, which is then used to fuel the production of glutathione
Data from a review of patient experiences and surveys involving more than 2200 patients with B12 deficiency in the UK indicate that many patients have concerns related to healthcare quality, safety, and treatment, with nearly two-thirds of respondents reporting that their treatment is insufficient to manage symptoms
It requires sterile technique, causes discomfort for needle-averse individuals, creates potential injection site reactions, and demands careful rotation to avoid tissue damage over extended protocols
The groups most likely to develop B12-related hair and skin changes are the same ones at risk for deficiency generally: vegans and vegetarians, adults over 50, people on long-term metformin or proton pump inhibitors, anyone who's had bariatric surgery, and people on GLP-1 protocols whose reduced appetite has significantly lowered their overall nutrient intake for an extended period
