When a body hosts parasites, the parasites steadily put off toxins. These toxins have to be filtered and removed through the liver.
The liver is the PRIMARY purifying organ...but it ALSO has to produce 1 to 1 and 1/1 quarts of bile everyday for proper digestion. It can't do both things effectively.
When the liver is so busy removing toxins...certain foods can cause an allergic type reaction...this is because the liver is too full of toxins to have enough enzymes to digest said foods.
Remove the parasites CAUSING the toxins...clean out the left over toxins...and the food allergies might just go away for good!