It's wild to think that we've grown organs in labs, built robots that can perform surgery and started producing mind-controlled prosthetics but we still don't know exactly how anesthesia works. Or what's actually going on when a baby has colic.

For all the incredible progress made in modern science, it seems the human body continues to hold some stubborn secrets. Beneath our skin lies one of the most complex and mysterious systems in the universe, and experts are struggling to piece together how and why it all functions the way it does.

Someone recently asked doctors, "What’s a mystery about the human body that science still hasn’t fully explained?" and the answers came pouring in faster than you can say, "I really don't know." It wasn't only medical experts giving their 2 cents, but als

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