Nutritional Yeast Flakes Benefits

What is the difference between yeast and yeast food?
I have heard of health benefits and my doctor yeast although it is suggested as a capsule to help with breastfeeding. I can not find the form of flakes or capsule. The closest thing I found is "nutritional yeast" flakes.
They are very similar, except that nutritional yeast is low in chromium. This yeast has a sweet taste. You can order online.
