Vitamin B12 is an essential water-soluble nutrient, also known as cobalamin. It plays a vital role in the healthy functioning of many systems in the body, including:

• DNA (genetic material) synthesis

• Energy production (metabolism)

• Neurological (brain) function

• Nerve cell health

• Red blood cell (hemoglobin) formation

Vitamin B12 plays a key role in the normal functioning of the brain and nervous system. It’s also important in the formation of red blood cells. A lack of B12 can lead to anemia (not having enough red blood cells), causing you to feel tired and weak.

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If you don’t have a true medically diagnosed deficiency you may do once-a-week injections for one to two months, and then move to monthly injections.

There’s no established toxic dose for B12—since it’s a water-soluble vitamin, you’ll flush out whatever you can’t use. However, you can feel mild to moderate pain in the injection site.

Other common side effects of B12 injections include:

• Diarrhea

• Headache

• Swelling

1. Improves Metabolism and Supports Weight Loss

• Many people suffer from a slow metabolism, causing weight gain and fatigue. With a B12 injection, you can boost your metabolism and speed up the body’s processes. A higher metabolism will help you burn calories faster while converting food into energy far more efficiently. There is a growing body of evidence suggesting that people with lower blood levels of vitamin B12 are more likely to be obese.

2. Helps Against Anxiety and Depression

• All the B vitamins, and especially B12, are crucial for your brain function. A deficiency can lead to depression and anxiety. B12 shots can be a powerful tool to help manage your mood and mental health.

3. Increases Red Blood Cells

• Vitamin B12 is necessary for producing red blood cells, which work to carry oxygen and nutrients around the body. If someone is deficient in B12, they may suffer from anemia. This leads to fatigue, dizziness, and many other symptoms.

4. Healthier Hair, Skin, and Nails

Adequate levels of B12 will keep your skin, hair, and nails healthy. As you now know, vitamin B12 plays an important role in cell reproduction.

5. Slows Down Memory Loss

We’ve already touched upon the importance of B12 when it comes to brain function. A deficiency has been strongly linked to impaired cognition and memory loss in older adults.

6. Strengthens Immune System

B12 is vital for keeping pathogens at bay and maintaining a healthy immune system. If you suffer from a deficiency, your immune system may start to falter.

7. Better Sleep

Some of the evidence is conflicting, but B12 supplements appear to have a beneficial effect on sleep patterns. A B12 deficiency is strongly linked to fatigue and has also been linked to insomnia.