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Quote by Mary Roach

“…he was doing a breath hydrogen test. If you know the amount of hydrogen someone is exhaling orally, it's a simple matter to extrapolate the amount they're exhaling rectally. This is because a fixed percentage of hydrogen produced in the colon is absorbed into the blood and, and when it reaches the lungs, exhaled. The breath hydrogen test has given flatus researchers a simple, consistent measure of gas production that does not require the subject to fart into a balloon.”

Quote by Mary Roach

Book:Gulp: Adventures on the Alimentary Canal
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Work

Gulp: Adventures on the Alimentary Canal

A non-fiction book that takes readers on a journey through the human body's digestive process, blending scientific explanations with humorous anecdotes and personal insights. more

Author

Mary Roach
Mary Roach

Mary Roach is an American author known for her in-depth exploration of science and technology. Her works are characterized by their humorous and accessible presentation of complex concepts, covering topics such as space exploration, medicine, death, and religion. Roach's books have received high praise from both academic and general readers. more

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