Confused about which vitamins to take or if you need to take any at all? You are not alone. Just ask Scottish GP Dr Malcolm Kendrick. Kendrick is a heart specialist as well as a GP, author, speaker and sceptic. That doesn’t mean he calls himself a cardiologist.

However, he knows a lot more than most cardiologists know when it comes to the real causes of heart disease. He also knows more than many doctors about the effects of diet on heart and overall health.

In this feature, Kendrick meant to write about stress, mental health and heart health. Instead, he says that people keep asking about vitamin supplements. So he looks at which ones really are likely to make a difference to your health. And he looks at why the pharmaceutical industry is so keen to persuade you not to take vitamins. You may be in for a big surprise. – Marika Sboros