b12 injections with normal b12 levels Sublingual vs. Injections: Which Option Is Right for You? – WhyNotNatural Vitamin B12 Monthly Injection: Typical

Why Low B12 Can Happen (And Why Its More Common Than People Think) The NHS and UK diet guidelines both highlight the importance of getting enough Vitamin B12 through food or supplements

No data suggests that very high supplementation levels are any more effective at boosting a persons immune system or bodily functions if they do not have a vitamin B12 deficiency

However, it may not be effective for permanent or scarring hair loss where follicles are irreversibly damaged

Additionally, although salt iodization programs have helped to improve the overall iodine status of populations, differences in salt fortification policies (e.g., mandatory versus voluntary), soil content, and food content contribute to wide variations in iodine status of individuals (160)