Not much is known about vitamin B12. People usually aren't aware of its vital role in keeping the human body together.

B12, an integral part of the B complex group of vitamins, is responsible for many things that we take for granted - it helps in the conversion of carbohydrates into glucose, pushes up our energy levels and keeps lethargy at bay. It is vital in regulating both the nervous and digestive systems, which implies that adequate quantities of this vitamin decrease stress, fight depression and keep the brain from shrinking.

B12 also helps shield you from heart disease by regulating your cholesterol levels and protecting you from high blood pressure and stroke. It is, in addition, crucial to the maintainence of your nails, skin and hair. It also keeps you looking young as it aids in skin cell renewal.

Wait, it's not over yet. This vital vitamin has a role to play in your body's metabolism and helps in producing the all-important red blood cells. And when it's done with that, it moonlights as an anti-cancer superhero, fighting colon, breast, lung and prostate cancer. Phew!

Like all things we take for granted, B12 is missed only when its levels drop. Many conditions affect the body's ability to absorb this vitamin', ranging from severe anaemia to the thinning of the stomach lining, to diseases that affect the small intestine (celiac disease and Crohn's disease). Problems with the immune system like lupus or Grave's disease and heavy drinking also interfere with the way B12 is absorbed by the body.

But all's not lost. And even if it has, it can easily be regained. B12 is abundantly available in many foods like meats, eggs, milk, cheese, certain kinds of fish and liver. For those who don't eat these, B12 supplements are widely available.

For those with severe B12 deficiency, intramuscular doses is a medically-approved way of compensating the lack of it. The best part about this vitamin though is that it is water-soluble, which means that after the necessary levels get absorbed by the body, the extra amounts are excreted naturally by your body.

But don't self medicate. You need to check with your doctor before deciding how exactly to tackle a B12 deficiency. Sometimes it could be symptomatic of a larger problem.

If you are feeling chronically tired, get your B12 levels checked. The prescription may be as simple as eating more B12-rich foods or popping a pill.

Source: Times of India

BDST: 1336 HRS, AUG 16, 2015
Edited by:  Sharmina Islam, Lifestyle Editor