We have outsourced responsibility for our health. We don’t want to change the way we live despite documentation that lifestyle is one of the most powerful determinants of health. Vitamins are necessary to convert food into energy and when people don’t get enough vitamins, they suffer diseases. The question isn’t whether people need vitamins. They do. The questions are how much do they need, and do they get enough in foods?
But I’m very sceptical of anyone who has a pill to cure the man-made epidemics of our time, and it turns out scientists know large quantities of supplemental vitamins can be quite harmful indeed. But sales are good.