Complications. Intestinal worms may increase the risk of certain health issues in the body. Some intestinal worms may make it difficult for the body to absorb protein or cause a loss of blood and iron, which could lead to anemia. Intestinal worms may also affect a person's ability to pass food through the intestines.

What poop looks like when you have worms?

In stools, the worms look like small pieces of white cotton thread. Because of their size and white color, pinworms are difficult to see. The male worm is rarely seen because it remains inside the intestine.

Is it bad to have intestinal worms?

Intestinal worms increase your risk for anemia and intestinal blockages. Complications occur more frequently in older adults and in people who have suppressed immune systems, such as people with HIV or AIDS infection. Intestinal worm infections can pose a higher risk if you're pregnant.