Man mostly right-handed?

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Fossilized human teeth indicate that over 90% of prehistoric humans were right-handed, a trait that has remained consistent over the past 500,000 years. Handedness is also seen in other species, and right-handed people tend to live longer than left-handed people.

Humans have almost always been predominantly right-handed, at least for the past 500,000 years, it is believed. Researchers have found that fossilized human teeth show signs that suggest more than 90 percent of prehistoric humans were right-handed, which is about the same percentage of right-handed people today.

More facts about handedness:

While there is evidence that handedness is genetic in humans, scientists are simply not yet sure exactly how it works.
Humans aren’t the only ones who are mostly right-handed: cockroaches and horses are also generally right-handed.
Studies show that right-handed people have, on average, a nine-year longer lifespan than left-handed people, in part because left-handed people appear to be slightly more accident-prone.




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