Left-handed people have long faced challenges, especially from a young age. Many were told in school to switch to the “correct” hand when learning to write.
They’ve often dealt with unfair labels and puzzled stares simply for doing things differently.
Beyond judgment, daily life wasn’t always easy—common tools like scissors, desks, and can openers were designed for right-handed use, turning simple tasks into constant hurdles.
Worse still, older studies wrongly suggested that left-handed people were more likely to have accidents or live shorter lives.
Today, science debunks those myths, revealing a deeper, more fascinating story behind left-handedness.
What science says about left-handed people
Although there’s no single explanation for why left-handed people exist, researchers believe it’s a mix of biology and environment.
Some scientists suggest it may be inherited from the mother’s side. Others point to hormone levels in the womb as possible influences.
Fascinatingly, left-handedness can sometimes be spotted before birth.
In ultrasounds, about 90% of babies are seen sucking their right thumb—suggesting the remaining 10% may become left-handed.
According to research, twins are also twice as likely to have at least one left-handed sibling, even though they share identical DNA.
According to twin studies, genetics only explain part of the story—roughly 25%.
Why most of the world isn’t left-handed?
In 2012, researchers at Northwestern University offered a compelling theory.
They believed handedness could be tied to how social humans have become over time. It’s not just biology—it’s behavior, too.
“The more social the animal — where cooperation is highly valued — the more the general population will trend toward one side,” Daniel Abrams, an assistant professor at Northwestern’s McCormick School of Engineering and Applied Science, told LiveScience
He added that for any society to function well, people must work together, explaining that this strong need for cooperation likely shaped human behavior over time, making it more common for people to use the same dominant hand.
As a result, most people today are right-handed.
In other words, using the same hand may have helped early humans work better together—whether passing tools, cooking, or building.
This cooperation could have naturally steered society toward right-handedness, even if a few were wired to use the left.
The brain, birds, and left-handed clues
Even animals can teach us something about handedness.
One study examined birds like chickens and pigeons, showing how light exposure before hatching affects eye and brain development.
“In chicken and pigeons, a genetic factor determines the position in the egg before hatch — the embryo is curled such that the right eye is turned to the semi-translucent eggshell, while the left eye is covered by the embryo’s own body,” explained Judith Schmitz, one of the authors of the study.
This results in stronger visual skills on one side, proving how early positioning and light exposure can shape brain function.
Similarly, human handedness may depend on subtle early influences, not inherited traits.
The hidden struggles lefties face
For a long time, being left-handed was misunderstood. Decades ago, children were pressured to switch hands, believing it was a flaw that needed fixing.
This constant need to adapt made life unnecessarily complicated for many left-handed people.
Even today, the world remains built mainly for right-handed convenience. From door handles to spiral notebooks, simple tasks can feel frustratingly complicated.
These daily challenges can make left-handed people feel out of place in a world not designed for them.
But science now shows that what once felt like a disadvantage might be a hidden strength.
Surprising strengths of lefties
While they comprise only about 10% of the population, left-handed people are often found in high-achieving circles.
From musicians to scientists, lefties have left their mark across many fields.
Artists like Picasso, composers like Beethoven, and modern icons like Bill Gates, Julia Roberts, and Paul McCartney are proud left-handers.
Even 20% of MENSA members—people with very high IQs—are left-handed.
In sports, the advantage is even clearer. Around 25% of MLB players are left-handed and tend to thrive in one-on-one sports like tennis, boxing, and fencing.
Their movements differ from the norm, making them unpredictable and harder to beat.
Authors and researchers agree that this difference creates an edge. In his book “The Puzzle of Left-Handedness,” Rik Smits explains how most athletes train against right-handed opponents.
This gives left-handed athletes a distinct upper hand—literally.
Living proudly as a left-handed person
Despite being in the minority, left-handed people continue to show resilience and brilliance.
They’ve had to learn to adapt, often finding creative solutions to everyday problems.
Many lefties pursue careers in art, science, and technology—fields that reward fresh thinking and unique perspectives.
Some researchers even suggest that left-handed men, especially those with advanced education, may earn more due to how quickly they process complex information.
Today, society is slowly embracing left-handed people for who they are—exceptional, capable, and inspiring.
A left-handed legacy of hope
Though the mystery of handedness isn’t fully solved, one thing is sure: being left-handed is something to be proud of.
More than just a physical trait, it represents adaptability, creativity, and strength.
And as science continues to uncover new insights, the world finally recognizes what left-handed people have always known—they’re not just different. They’re extraordinary.
Do you know any left-handed people, or are you left-handed yourself? Let us know your thoughts about the points described above, and don’t forget to share this article with your family and friends!
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I’m left handed. My husband is left handed. We have three boys. The first two are left handed. The youngest was ambidextrous until about 5 then he settled on being right handed but he plays tennis, bats and shoots the basketball all with his left hand. Sometimes when he plays tennis he switches the racket to his left hand and playing pickle ball he uses two paddles!!
Lol
They are all very athletic.
This article was very interesting!!
I am left handed been all my life, yes our schools tried to teach me right handed and I wrote backwards from right to left 😁. I can problem solve and listen and learn pretty well!
My dad was left handed. My 3 brothers and I are all right handed,but have a half brother(different mom)that is left handed….. I have 4 sons and 3 of them are left handed…
I’m a lefty and my brother as well. When we were small my mom would tie our hand to the back. I fought it all the way. As I told her that’s how God made me and that’s how I was going to stay. My younger brother listened and now he writes with both. We are both very creative and if we set our mind to do something we just have to read up on it or just see how it’s done and we can do it. We are both very good at thinking outside the box and great problem solvers. We both suck at sports. But we love music and artsy fartsy as friends put it. I love my arts and crafts, baking, which I’m very good at and boy do I love to read and learn.
In school they forced me to write right handed. I am ambidextrous. I bowled lefty and would throw a ball left handed. I did well in art and crafts. But at 86, I have more pain in my left arm than my right, because I would tend to use the left more. Oh, well, such is life.
Left handed when I was in kindergarten they tried making me write with my right hand my parents were pissed needless to say we moved so I was no longer in that school.
I am left handed. But I inherited it from my dad’s side of the family. I am a vet tech. I do prefer animals over peopls. I am artistic, musical, athletic.
My husband and are both lefties. Both of our children ended up being righties! Made for a good time trying to teach them anything using their hands! 😉
I’m a righty married to a lefty….best part is being to hold hands while eating dinner!
Proud lefty here! Eldest child also a lefty, we’re both creative. I work in I.T and live to think I am a good problem solver at least! 🙂
Agreed with everything but the sports, for me anyway. I have never excelled or was even proficient in sports.
But the problem solving skills… now that is where I shine.
My grandmother was left handed and I’m a leftie too.I am creative and do arts and crafts. No one ever tried to change me,thank goodness. Lefties are great people.
I’m a lefty but throw, kick, bat and play guitar r/handed. My grandfather believed it was a sign of the devil to be l/handed and “tried fighting my Mother to make me use my right hand but with NO success! I mirror wrote until age 7 and I do find I’m a quick problem solver and Love being creative! Out of my family and 6 brothers & sisters I am the only lefty.
My father was left handed. He tried his best to make sure I was not left handed. I believe it was because like the article said people thought it made you inferior, he didn’t want me to live what he endured.
Good thing about it is that I can do a lot of things with my left and right hand.
Me too! (Left hand up) I’ve learned to embrace being different. Teachers never tried to stop me using my left hand, but everything else that had nothing to do with school or education. They missed out on my creativity and problem solving skills. I’m into art, music, and feel invigorated when given investigatory projects at work. I’ll now be on the lookout for the 15% earnings😉. And honestly I think lefties are much nicer and caring people.
Left handed ness was passed from my father who was left handed. No one in my mother’s family is left handed. My older brother is left handed as am I. My younger brother is no but has 2 left handed children. My nay child is ambidextrous and my older brother’s only child is left handed.