b12 injections for muscle growth shots weight loss: Do they work, risks, benefits, and more Why Vitamin B12 is Essential

these residual ROS levels are sufficient to perturb metabolism and contribute to cell death alongside other mechanisms

Rare but severe side effects include: Body-wide itching or swelling

Those who follow a vegetarian or vegan diet may be at risk for B12 deficiency, as this vitamin is primarily found in animal products

These include: Meat Fish Poultry Milk Eggs Fortified breakfast cereals Fortified breads Fortified nutritional yeasts Fortified plant milks If you follow a vegan diet (meaning you don't eat any animal products, including meat, milk, cheese, and eggs) or you're a vegetarian who doesn't eat enough eggs or dairy products, you could be lacking in vitamin B12

J Clin Invest 113 : 2527 Heffernan M et al

During pregnancy, your bodys need for certain B vitamins increases significantly