Vitamin B12 is important for energy, brain function, and red blood cell production, but it's predominantly in animal foods.

Vegetarians have several reliable options for meeting their vitamin B12 needs. For those avoiding all animal products, fortified foods and supplements become essential for maintaining optimal health.

Where should we begin with vitamin B12 and the widespread use of this supplement? Let us warn you, if you tinker with this seemingly harmless vitamin too much, it can have a powerful effect. Since it ...