One review concluded that vitamin B12 plays a key role in fat metabolism, noting that a deficiency could be linked to increased fat accumulation and obesity ( Another animal study found that severe vitamin B12 deficiency led to a significant increase in body fat percentage and cholesterol levels in pregnant mice ( Whats more, one animal study showed that administering B vitamins to rats fed a high fat diet reduced weight gain and increased levels of several enzymes that influence metabolism, compared with a control group ( However, current evidence is lacking, and additional high quality studies are needed to determine how vitamin B12 may affect metabolism and body fat in humans
In that time I didn't have that much pain and numbness and severe muscle weakness, I found my ferritin is low and raised my ferritin and lots of pain and weakness improved then started to take b12 timed release methylcobalamin and I found it is more helpful than cyanocobalamin
We do not give B12 injections on demand without a written reason
Image: Dragana Gordic/Getty Images About the Authors Toni Golen, MD, Editor in Chief, Harvard Women's Health Watch
In turn, substance use typically worsens mental health over time
Vitamin B12 supplements can also be used if necessary
