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These toxins can affect your heart, bloodstream and even gastrointestinal tract, Elsayegh said.

The brain, gastrointestinal tract and pancreas process some alcohol as well.

A fungus discovered in the mouse stomach may hold a key to fungal evolution within the gastrointestinal tract, according to new research led by Weill Cornell Medicine investigators.

Oxytocin itself cannot be taken orally because it is rapidly broken down in the gastrointestinal tract.

Unlike bacteria, the microorganism is less likely to exchange genetic material with other microbes and doesn't take up residence in the gastrointestinal tract where it could potentially disrupt microbial communities.