It also controls blood sugar levels, helping to reduce cravings
Neurological symptoms may take several weeks to months to improve, with some deficits potentially persisting if treatment is delayed
B vitamins support normal energy metabolism, but an injection alone does not cause significant weight loss
PMID 8856015
(2015) Effect of vitamin B-12 and n-3 polyunsaturated fatty acids on plasma homocysteine, ferritin, C-reaction protein, and other cardiovascular risk factors: a randomized controlled trial
B12 is safe on its own, but a few conditions call for extra care, which is why a provider reviews your history before treatment: Leber's hereditary optic neuropathy, a rare inherited eye condition, where certain forms of B12 may be a concern for the optic nerve