and wondered what all those B numbers actually mean, you’re not alone. B1, B2, B6, B12… it can feel like alphabet soup. But these vitamins are quietly doing some of the most important work in your body, and because your body can’t store them, you need to be getting them every single day.

So, What Exactly Are B Vitamins?

B vitamins are a group of eight water-soluble vitamins. “Water-soluble” simply means they dissolve in water and aren’t stored in the body the way some other nutrients are. Any excess is flushed out, which is why a consistent daily intake, through food or supplements, really matters.

Together, they support everything from your energy levels and mood, to your heart, skin, and nervous system. Think of them as a behind-the-scenes team, each with their own job, but all working together.

Meet the Eight B Vitamins

B1 (Thiamine) helps your body convert carbohydrates into energy and keeps your heart, muscles, and nervous system functioning properly.

B2 (Riboflavin) supports energy production, helps maintain healthy skin and eyes, and plays a powerful role in your body’s antioxidant defences.

B3 (Niacin) is involved in converting food into energy, supporting DNA repair, promoting healthy skin, and helping balance cholesterol levels.

B5 (Pantothenic Acid) is essential for producing hormones, metabolising fats, and forming red blood cells. It also plays a key role in how your body responds to stress.

B6 (Pyridoxine) helps your body produce neurotransmitters like serotonin and dopamine, the chemicals that regulate mood, as well as supporting immune function and healthy red blood cells.

B7 (Biotin) you might recognise this one from hair and nail supplements. It’s vital for carbohydrate and fat metabolism and is especially well known for supporting healthy hair, skin, and nails.

B9 (Folate) is crucial for DNA synthesis and the production of red and white blood cells. It’s particularly important during pregnancy, as it helps protect against serious birth defects.

B12 (Methylcobalamin) is essential for red blood cell formation, a healthy nervous system, and DNA synthesis. It’s found almost exclusively in animal products, making it a key consideration for vegetarians and vegans.

Why They’re Stronger Together

While each B vitamin has its own role, they work best as a team. They cooperate across key processes like energy production, red blood cell formation, DNA repair, and nervous system health. A shortfall in one can affect how well the others function too, which is why getting the full range matters.

Where Do You Get Them?

A varied, balanced diet goes a long way. Good sources of B vitamins include whole grains, eggs, meat, fish, leafy green vegetables, legumes, nuts, and seeds. That said, certain lifestyle factors including stress, alcohol, some medications, and digestive issues can all affect how well your body absorbs and uses them. More on that coming up.