This Is How Many People Are Left-Handed

Lefties, you're not alone.

This Is How Many People Are Left-Handed

Lefties, you're not alone.

From scissors to desks to baseball mitts, there are constant reminders that the world just isn’t designed for left-handed people. While being a lefty can make a person feel left out, southpaws aren’t as unique as you might think.

Approximately 10 percent of the population is thought to be left-handed. That means there could be upwards of 700 million total lefties around the globe. In fact, being a lefty is significantly more common than having blue eyes, red hair, or identifying as a member of the LGBT community.

So, what causes someone to be left-handed in the first place? A DNA quirk? An inherited trait? A curse? The short answer is that scientists simply aren’t sure why some people are singled out to be southpaws. However, while science hasn’t pinpointed a specific gene that causes people to be left-handed, there may be some significance to this feature. In fact, during a 2015 presentation to London’s Royal Society, Dr. Silvia Paracchini, a human geneticist from the University of St. Andrews, revealed that there are differences in the brains of left- and right-handed individuals.

Left-handed individuals have significantly more nerve fibers in their corpus callosum, which divides the brain’s left and right hemispheres. A lefty has about 11 percent more nerve fibers in this strip of the brain than a righty. As such, leftys’ brains share information between hemispheres at an elevated pace.

So, while you may never write comfortably in a spiral-bound notebook or find using a manual can opener easy, at least you’ve got plenty of brainpower that can help you find solutions to those lefty conundrums. And when you want to know more about the how and why of the world, the 50 Awesome Facts About Everything might just surprise you yet.

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