Statements Author contributions MR, LC, and EM provided the idea for the review
A 1,000% elevation for six days is working against it, and thats where legitimate cancer risk concerns around growth hormone (prostate, ovarian, lung, breast) begin to have real grounding
38 Underweight and low body fat percentage
Options include: Fortified foods : Nutritional yeast, plant-based milk alternatives, breakfast cereals, and meat substitutes fortified with B12 (check labels for content) Supplements : Daily supplements of 10 mcg or weekly doses of 2,000 mcg ensure adequate intake, as recommended by the British Dietetic Association The body absorbs approximately 50% of a 12 mcg dose but only about 1% of a 1,000 mcg dose through passive diffusion
Important Limitations Peptide interaction data is limited compared to FDA-approved pharmaceuticals
Uneven skin tone, hyperpigmentation, dullness, oxidative stress from environmental exposure, and patients who want antioxidant support that works systemically