Vitamin D is actually made up of several B vitamins that work together in the body, with each of the B vitamins performing unique and important functions. This group includes the following vitamin B, one, B, two B, three, B, five, B, six, b 12, folic acid, and bitey. These vitamins are essential for the breakdown of carbohydrates into glucose. This provides energy for the body, the breakdown of fats and protein which aids in the normal functioning of the nervous system, muscle tone in the stomach and intestinal tract, your skin, hair, eyes, mouth and liver. Vitamin B is available on dark green vegetables, grains and meat. But deficiencies can occur even in general population, especially vegans are at high risk of B 12 deficiencies along with pregnant women.
So if you fall into one of these two categories, do a blood test and speak to a doctor about supplementation. supplementation can be either done via a complex formula that has all B vitamins in it, or you can just get a single B vitamin if you prefer that. For extreme deficiencies, shots of B 12 may be possible, but for most people supplementation with capsules will be enough.