For men, especially those juggling fitness goals, demanding schedules, and family obligations, the benefits can be significant: Energy and stamina Vitamin B12 helps convert food into ATP, your bodys energy currency
If you have a temporary deficiency or increased requirement (say, after a surgery or during recovery from an acute illness), you might only need a short course, perhaps a few weeks of injections, until your vitamin levels normalize or you can meet your needs by mouth again
However, our efforts often turn into frustration, and we may end up confused as to what to actually buy
Human data are limited and mixed: Clinical studies have largely assessed safety and metabolism, while weight-related outcomes were modest and inconsistent
Doing the same at home can often total under $80, including supplies