It’s essential for a healthy immune system and regulates mood. A growing number of UK clinics market vitamin injections to healthy people but do you really need them?
B12 is involved in producing red blood cells, maintaining a healthy nervous system, and converting food to energy. It also helps to regulate the immune system and mood, and control levels of the amino acid homocysteine, elevated levels of which are associated with heart disease. Most people who eat meat, fish, eggs and dairy products get enough B12. Vegans are advised to eat fortified food and take supplements.