vitamins is the striking disproportion between dosage and effect. Put simply, we need vitamins a lot, but we don’t need a lot of them. Three ounces of vitamin A, lightly but evenly distributed, will keep you purring for a lifetime. Your B1 requirement is even less—just one ounce spread over seventy or eighty years. But just try doing without those energizing specks and see how long it is before you start to fall to pieces.

