Your memory problems, mood swings or night-time sweating could be due to deficiency of Vitamin B12. Here are signs and symptoms you should be aware of.

Vitamin B12 deficiency is more common in elderly compared to young across the globe but vegans and vegetarians are more at risk of developing it. This is the reason at least 47% Indians have Vitamin B12 deficiency as they many of them either stay away from non-vegetarian food or consume it less frequently.

An important micronutrient, Vitamin B12 can have a significant effect on various body functions. Since our body doesn’t naturally produce it, one must add its sources to the diet. Vitamin B12 is mainly found in animal products like dairy, meat and eggs. People who are vegetarians or vegans can have Vitamin B12-fortified foods or supplements to meet the required Vitamin B12 levels.

This vitamin is stored in the liver for up to 5 years and if you are at risk of eventually becoming deficient if your diet doesn’t help maintain the levels. (See pics: Fatigue to brain fog; 5 sneaky signs of Vitamin B12 deficiency)

“The body is dependent on B12 for maintaining nerve cells and producing DNA – the body’s genetic material. B12 deficiency usually isn’t a matter of concern but can be a nightmare if not tackled at the right time. This is how you can know if you are deficient in vitamin B 12 by taking note of these symptoms,” says Dr Vikrant Shah, Consulting Physician, Intensivist, and Infectious Disease Specialist, Zen Multispeciality Hospital Chembur.