Remember where health is concerned, Life begets Life. Eat living foods when possible and give up eating the flesh of your fellow creatures. On top of parasites and allergies, often the small and large intestines are covered in mucoid fecal plaque that has formed as a response to the consumption of meat, dairy, and processed foods. Well what makes you think it is any different once it enters your digestive tract. It sticks to the walls and becomes very difficult to eliminate.
Meat is very hard to eliminate.
Most people have meat stuck in their intestines that has been their putrefying since they were small children. The nutrients you absorb from your food have to be absorbed through and among this fecal plaque which is very toxic. Therefore, as you absorb nutrients, you are also absorbing the toxins from your digestive tract. Parasites also like to hide in this plaque, by the way. The answer is to clean it out.