B vitamins are essential for energy, brain function, mood, nerve health, skin, and play a critical role in metabolising carbs, fats and protein. The problem is that many people are low in B vitamins – and you could be too. Vitamin B12 deficiency is linked to fatigue, brain fog, nerve damage and fertility issues. In this blog, you’ll learn what the 8 B vitamins are, signs of vitamin B deficiency, the benefits of B vitamins, and why it’s important for most people to supplement with a vitamin B complex.