Vitamin B12 is a workhorse. It’s a big player in keeping your brain, immune system, metabolism, and nerve and blood cells clicking on all cylinders.
Low levels of this important nutrient can set you up for a host of problems, ranging from minor to serious.
The tricky thing about vitamin B12 is that our bodies can’t make it and it’s not always easy to get enough from food alone. Although it’s found in most animal-based foods, such as meat, poultry, shellfish, eggs and dairy products, many people need to take supplements to reach optimum levels.