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12 diseases doctors can actually detect through smell

Many diseases and conditions have their own “breathprint,” and this may soon pave the way for earlier detection and diagnosis.

Why do diseases smell?
Why do diseases smell?
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Diseases change the way a body works, says Yehuda Zeiri, PhD, a biomedical engineer at Ben-Gurion University’s Kiryat Bergman Campus in Be’er-Sheva, Israel. “When disease leads to enhancement of new and different biochemical processes in the body, these processes may lead to the production of small volatile molecules,” he explains. “These [molecules] can be transported by the blood to the lungs and be released in exhaled breath; they can also be released in the urine and sweat.”

Is ‘old person’ smell real? Find out the answers to 13 strange body facts you’ve always wondered about.



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