Which of the following statements is true of irritable bowel syndrome?

A) It is caused due to the exponential growth of the gastrointestinal microbiota.
B) It has many known structural abnormalities and is considered an anatomical disorder.
C) It causes damage to the mucosal lining of the stomach.
D) It is believed to be caused by elevated levels of a neurohormone called serotonin.


D

Nutritional Science

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