Vitamin B12
Helps make red blood cells and keeps the brain and nervous system healthy.
Daily Target:
1.5 micrograms (µg)
Vitamin B12, also known as Cobalamin, is vital for several key bodily processes. It's a primary component in the formation of healthy red blood cells, which are responsible for carrying oxygen to every part of your body. It also plays a crucial role in protecting your nerve cells and supporting the fundamental process of DNA creation. A unique aspect of B12 is its source. It is found almost exclusively in animal-derived foods like meat, fish, eggs, and dairy. This makes it a crucial nutrient for those following a vegan or strictly vegetarian diet to be mindful of. Fortified foods (like some plant milks and cereals) or a reliable supplement are the best ways to ensure an adequate intake. Unlike many other B vitamins, your body can store B12 in the liver for several years. This means a deficiency can take a long time to develop, making a consistent, long-term source all the more important.
Good sources
1 wedge of cheese (35 g)

provides
0.5 µg
1 egg

provides
1.1 µg
1 glass of milk

provides
1.0 µg
1 salmon fillet

provides
3.6 µg
1 portion of tuna (100 g)

provides
2.5 µg
What the research says
🇬🇧Learn about the B vitamins' key role in your health, the best food sources, and the daily amount to aim for.NHS: vitamin B guide