Re: The obvious problem....

Re your question in Para 1: No, I really don't know. By the way, how much food is "enough"?

Personally, if push came to shove, I'd advise people who suspect infestation but don't have access to professional diagnosis, to buy themselves a parasite killing formula, try it for awhile, and see what happens. Except for Wormwood , which you have to be careful with, there won't be any harm that I can see. If there's no result, go on down the line and investigate possibility of other causes for apparent malnutrition. A Dr. of old style Chinese medicine can be helpful here. They treat "patterns of disharmony", not isolated symptoms.

I get my info on parasite cleansing from Paul Pitchford's big book on health from Asian standpoint, 3rd ed. There's a large section on parasite problems at the back of the book. He recommends different herbs for different people according to their present condition and constitution. That way, reactions are minimized.