The connection between parasites and health problems is very strong. This concept is very accepted in third world countries but ignored in developed countries. Why? And with as many outdated water-treatment systems, international travel, imported food and use of massive amounts of antibiotics, our bodies are very susceptible to parasites. I read one resource that stated that as many as 73% of people struggle with symptoms caused by parasites that lead to weight gain. As a veterinarian, I’ve found that parasites are very common and I recommend routine worming once or twice a year to keep my animal patients (and myself) healthy.