(And, apparently, camels?) If someone's eyes tell him one thing and his ears tell him another, that mismatch can cause a problem. While anybody can get motion sick, with sufficient motion, there’s still much left unknown about why some people are more likely to get sick on boats-and cars, and planes, and carnival rides, and tire swings. A recent study by genetics company 23andMe, published in Human Molecular Genetics, sheds some light on genetic factors associated with motion-sickness, supporting some existing theories about what parts of the body are involved in the phenomenon.
Why people get motion-sick is a mystery, and how motion-sickness works is less of a mystery, but more of a debate. “If it was not for sea-sickness, the whole world would be sailors.” Even farther back, Greek physician Hippocrates presaged our current term, “motion sickness,” writing, “sailing on the sea proves that motion disorders the body.” “The misery I endured from sea-sickness is far far beyond what I ever guessed at,” Charles Darwin once wrote to his father. For so long as man has attempted to tame and traverse the sea, the sea has punished him for it. Humans have explored a mere five percent of the oceans over the long and storied history of seafaring, and even this knowledge has come at a cost. The wide expanse of blue water that covers most of this world holds many mysteries.
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