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Message: <blockquote data-quote="DiabeticGeek" data-source="post: 20900" data-attributes="member: 7961">I hadn't heard this before.  It is fascinating, but it doesn't surprise me.  Dogs have about 220 million scent receptors in comparison with a humans five million.  Dogs live in a world of smell.  Their eyes can't see anything like as much detail as can humans (their lenses are flatter and they have very limited colour perception).  Smell is very much their primary sense.  This means that they can smell vastly more things than we can, and they can distinguish real subtleties.  That is why they can be trained to sniff out infinitesimally small traces of drugs or explosives.  I have heard stories of dogs being trained to diagnose some forms of cancer, at an earlier stage than most technologies can detect them - so it doesn't surprise me that they can very accurately smell how much glucose is circulating in people's blood.An elegantly tangental solution to the test strip rationing problem!   :wink:</blockquote>

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