Many species of parasites absorb their food through their skins - this is why you want to take your HUMAWORM first. Give them the herbal "posions" before they can get your food.
If you can't eat - you can't eat. Try to at least eat a cracker or two so that you won't have heartburn or feel nauseous. The more you take HUMAWORM - the cleaner you will be and the more you will be able to eat. Hang in there!