About 10% of the world is left-handed equating to 1 in every 10 people whom primarily use their left hand to perform daily tasks. Therefore, in a world where most people are right-handed, lefties often have difficulty performing day-to-day tasks with tools, appliances, and other equipment that have been designed for the right-handed majority.
Left handed statistics
Men: 1 out of every 9 men is left handed.
Women: 1 out of every 13 women is left handed.
Likelihood of Having Left-Handed Children
Studies have shown that left-handedness is linked to the gene LRRTM1, which affects the symmetry of the brain. The likelihood of passing on this gene increases if both parents are left-handed.
If both parents are left-handed, they have a 26% chance of having a left-handed child.
One left-handed parent and one right-handed parent have a 19% chance of having a left-handed child
If both parents are right-handed, they have a 9% change of having a left-handed child.
Demographics show that 13% of 20 year-olds in America are left-handed. However, by age 50, that number drops to 5%. And at age 80, lefties only make up 0.8% of that age group.
Are left-handed people clumsy? While left-handed people may be more likely to have accidents, it is probably not because they are more accident-prone than their right-handed friends. Lefties are more likely to be injured while performing day-to-day tasks due to appliances and machines favoring right-handed people.
- 85% more likely to get into a car accident
- 54% more likely to be hurt using tools
- 49% more likely to have an accident at home
- 20% more likely to have an accident at work
While this correlation remains widely disputed, the same gene that can determine left-handedness,LRRTM1, also increases testosterone levels in the brain, which in turn could cause an imbalance leading to certain conditions.
- Some ergonomic computer mice are designed to be only suitable for right hands.
- Most school desks are designed to cater to right-handed people, making note taking very difficult for left-handed individuals.
- Light bulbs, screws and most items that are threaded are turned clockwise. This makes screwing in certain items such as light bulbs very difficult for lefties.
The Upside of Being a Lefty
- A left-handed individual with 1 year of college education makes an average of 13% more than his right-handed counterpart.
- And a left-handed person with 4 years of college brings home an income that is 21% more than his right-handed equivalent.
Before the 20th century, left-handedness was considered a disability, so little is reported on which presidents were left-handed. However, since 1929, 6 of the 14 U.S. presidents were left-handed, including Barack Obama.
Some people say that left-handed people show the proclivity to be more creative than right-handed individuals. What do you think?
Some famous left-handed people include:
An interesting bit of trivia fact.
Why Do We Wear Wedding Rings on our Left Hand?
This tradition turns out to have been started somewhere around 300 BC when people believed that a vein of blood ran directly from the third finger on the left hand to the heart. According to wikipedia “because of the hand-heart connection, people named the putative vein descriptively vena amori, Latin for ”the vein of love”. Due to this tradition, it became acceptable to wear the wedding ring on this finger.” Years later when the circulatory system was discovered this idea was proven wrong but yet the tradition continued on.
“Left-handers get their revenge as batters,” wrote George Will in his book Men at Work. ”At the plate, they stand a step closer to first and the momentum of their swing causes them to uncoil moving toward first. As a result, the average left-hander among today’s major leaguers gets there a second faster than the average right-hander.