04/09/2026
🦠 DID YOU KNOW SOME PARASITES TRAVEL THROUGH THE LUNGS?
One of the most fascinating examples is Ascaris lumbricoides — the intestinal roundworm.
After microscopic eggs are swallowed, the larvae hatch in the intestine — but they don’t simply stay there.
They can:
➡️ Pe*****te the intestinal wall
➡️ Enter the bloodstream
➡️ Travel through the liver and circulation
➡️ Reach the lungs
➡️ Break into the air spaces of the lungs
➡️ Crawl upward through the bronchi and trachea
➡️ Reach the throat
➡️ Get swallowed again
➡️ Return to the small intestine, where they mature into adult worms
This stage of the life cycle is known as larval migration.
During the lung phase, some people can experience coughing, wheezing, chest discomfort or inflammation as the larvae pass through the respiratory system.
Parasites are not always sitting quietly inside the digestive tract. Some species have complex life cycles that allow them to migrate through different organs before reaching their final destination.
🧬 Understand the parasite. Understand the life cycle. Understand what you're dealing with.
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