Most people get enough from diet, but older adults, vegans, and those with certain medical conditions may require supplementation
B12 is one piece of the energy puzzle This is worth saying clearly: B12 matters, but it's not the whole story
Another big issue is Hypothyroidism
One should nevertheless bear in mind that the human metabolism is a sensitive equilibrium, and an unnecessary overdose of vitamins certainly creates a burden in any case for the kidneys, via which vitamin B12 is excreted
Prompt assessment is especially important for numbness, tingling, weakness, balance problems, memory changes, or mood changes