What is Vitamin B12 and Why Does It Matter?
Vitamin B12 is one of those things your body absolutely needs but doesn't always get enough of. It helps your body produce energy, keep your nerves healthy, make red blood cells, and keep your immune system working properly. It also has a big effect on your mood and how clearly you think.
The tricky part is that B12 deficiency is surprisingly common in the UK. Your body can't make B12 on its own, so it has to come from food or supplements. But even if you eat well, things like age, digestive issues, medication, and diet choices can mean you're not absorbing as much as you need. A lot of people are running low without realising it, because the symptoms creep up gradually: tiredness, brain fog, feeling flat.
A B12 injection puts the vitamin straight into your muscle, so your body can use it immediately. It's faster and more reliable than tablets, especially if your body doesn't absorb supplements well.