Natural food supplements are foods (or food by-products) that provide health benefits. These foods are high in nutrients and most of them aid digestion which in turn promotes good health.
photo credit: david.nikonvscanon
A few years ago I did extensive research on this topic since eating super-nutrient foods sounded like a better option than purchasing manufactured supplements. Vitamin B12 was the main nutrient for which I was unable to find a substitute in a natural source. Brewer’s yeast does contain some, but only in small quantities.