The passengers in our microbiome contain at least four million genes, and they work constantly on our behalf: they manufacture vitamins and patrol our guts to prevent infections; they help to form and bolster our immune systems, and digest food.
Daily vitamins are of no value.
There is a major problem with reliance on placebos, like most vitamins and antioxidants. Everyone gets upset about Big Science, Big Pharma, but they love Big Placebo.
We're lying ourselves into believing things are untrue, like organic food will solve all our problems, or vitamins will make us healthy, or we don't need to vaccinate our children.