Liu JP, Baker J, Perkins AS, Robertson EJ, Efstratiadis A
A daily dose of selenium of around 50 to 150mcg per day is usually sufficient to ward off deficient states and to protect your thyroid gland from damage
As suitable LC-MS methods (both LC-MS/MS and LC-HRAMS) for IGF-1 have been developed, more laboratories can now utilize these approaches
A practical daily stack for hair protection includes a high-quality multivitamin as a baseline, plus additional iron (if ferritin is below 50 ng/mL, under medical supervision), zinc at 15-30 mg with 1-2 mg copper, vitamin D3 at 2,000-5,000 IU depending on baseline levels, biotin at 2,500-5,000 mcg (remembering the thyroid lab caveat), and a B-complex covering B12 and folate