If you are constantly lethargic even after a full night of sleep, you may need B12 supplementation. This vitamin is required in the production of red blood cells. Red blood cells transport oxygen around your body, providing the fuel your cells need to produce energy. A loss of red blood cell production will create symptoms of low energy and inability to concentrate.

A deficiency of the B12 vitamin causes anemia. An anemic individual can not efficiently convert fats and proteins into energy. This leads to the frustrating situation of difficulty losing weight despite regular exercise and a good diet.

A lack of B12 interferes with your body’s ability to produce white blood cells. These cells are essential in fighting off infections and keeping your immune system in good working order. If you find yourself getting sick more often than usual or having allergies where you previously had none, you may need a B12 injection.

Tryptophan is the amino acid found in foods like turkey that makes you drowsy. Our body manufactures tryptophan naturally, and it’s a big part of what helps you fall asleep at night. Vitamin B12 is a major factor in the tryptophan production process. B12 injections can help you go from restless nights to getting a good night sleep.

Hair loss is so common in men, that a B12 deficiency as the cause of it is often missed. Because cells are not being metabolized efficiently, it is difficult for hair growth to occur normally. Regular B12 shots restore your body’s ability to metabolize, and cause your hair to begin growing as usual.

B12 injections are highly recommended for those who have a deficiency. The synthetic chemical, cyanocobalamin, is not easily absorbed by your body, but methylcobalamin is. Depending on your condition, you may need to get a B12 injection every few weeks until your deficiency is gone. If you have a medical condition where you are unable to absorb sufficient B12 from your diet, you will need to get a shot every month to stay healthy.