This and the other tools on the site are fantastic! I think it would be useful to fuse a couple of the tools you have into one. For example, in the nutritional deficiency tool, I am told that I am lacking niacin. I have to leave the context of that tool to look up which foods contain niacin. However, you already made another tool that does just this. How about displaying a list of the top foods containing the deficiencies, with a link to the full results?