By Dr. Muhammad Mahtab Hossain Mazed

Every year, August 13 is observed as International Left-Handers Day. The day is observed around the world to recognize the uniqueness of people who predominantly use their left hand, highlight their everyday experiences, and increase social awareness and acceptance. Being left-handed is a natural part of human diversity. Yet, for a long time, many societies have viewed using the left hand as unusual or incorrect. As a result, many children have been forced from an early age to write or perform tasks with their right hand.

Modern science shows that the hand a person prefers to use is part of their natural development. Although most people are right-handed, a significant proportion of the population is left-handed. In some individuals, the ability to use both hands may also be relatively similar. Therefore, respecting a child's natural hand preference is important for their confidence and healthy development.

Statistics In 2026, the world's population is estimated at approximately 8.3 billion. If the overall prevalence of left-handedness is taken as 10.6%, the estimated number of left-handed people worldwide would be approximately 880 million.In other words, on average, about 1 in every 10 people worldwide is left-handed. A major meta-analysis published in 2020 analyzed data from more than 2 million people and provided one of the most comprehensive estimates of the prevalence of left-handedness.

The study found that estimates of left-handedness varied across studies from approximately 9.3% to 18.1%. However, the most reliable overall estimate was 10.6%, or roughly one person in ten.

Research has shown that the estimated prevalence of left-handedness can be influenced by country, culture, age, sex, and the method used to define handedness. Therefore, it is not possible to determine an exact global number of left-handed people; approximately 880 million is an estimated figure.

Being Left-Handed Is Not a Disease
Being left-handed is not a disease, disability, or sign of weakness. It is a natural aspect of human diversity. If a child naturally feels more comfortable writing, drawing, eating, or performing other activities with the left hand, there is no need to force the child to use the right hand simply because of social convention.

As children grow, they gradually show which hand they prefer for activities requiring greater precision. Therefore, parents and teachers should observe the child's natural preference and provide appropriate support.

Why Are Some People Left-Handed?
The development of hand preference, or handedness, involves complex biological and developmental factors. Genetic characteristics, brain structure and function, and various environmental influences are believed to be associated with handedness. However, no single factor can explain why every individual becomes left-handed.

There is a relationship between hand preference and the functions of the two cerebral hemispheres. However, the simplified idea that “left-handed people have a more active right brain” should not be treated as established scientific fact. The human brain is highly complex, and both hemispheres work together in many different activities.

Why Forcing a Child to Change Hands Is Not Appropriate
When a child naturally feels comfortable using the left hand, repeatedly forcing them to change hands can create unnecessary pressure. In activities such as writing, this may reduce the child's comfort and potentially make learning more difficult or frustrating.

Schools and teachers should pay particular attention to this issue. Instead of comparing left-handed children with right-handed classmates, teachers can provide appropriate seating arrangements, allow sufficient space for notebooks, and ensure comfortable writing conditions.
If a teacher asks, “Why are you writing with your left hand?”, the child may begin to feel embarrassed about a natural characteristic. Instead, the child should be encouraged to use whichever hand feels most comfortable and natural.

Awareness Is Needed in Schools
The education system does not require major changes to accommodate left-handed students; what is primarily needed is awareness and sensitivity. In many classrooms, desks and chairs are arranged in ways that can interfere with the movement of neighboring students' arms. Providing a slightly different seating arrangement for a left-handed student can make writing more comfortable.

Teachers should accept left-handed children naturally rather than labeling them as different or unusual. During examinations, they can also be provided with adequate space and a comfortable position.

The Role of Parents
The family plays the most important role in a child's natural development. A child who uses the left hand should never be ridiculed, called “wrong-handed,” or repeatedly pressured to switch hands.

Parents should remember that a child's self-confidence is strongly influenced by family behavior. Children should be encouraged to view their natural characteristics positively. Their abilities, hard work, and creativity should matter—not which hand they use to write.

At the same time, if a child experiences unusual difficulties with fine motor activities, coordination, or other aspects of development, parents should consult a pediatrician or an appropriate health professional.

Practical Challenges in Everyday Life
Many products and tools today are primarily designed for right-handed users. Left-handed people may sometimes face additional difficulties when using scissors, certain musical instruments, specific tools, desks, and writing equipment.

The solution is to design products and environments that take human diversity into account. Schools, workplaces, and other institutions should ensure that natural physical differences do not become unnecessary barriers to participation.

Common Misconceptions About Left-Handed People
Various myths and misconceptions about left-handed people still exist in society. Some people associate left-handedness with bad luck, while others treat it as evidence of superior intelligence or a particular personality type. Both views are exaggerated.

There is no guarantee that a person will be more intelligent simply because they are left-handed. Likewise, left-handedness is not a sign of weakness. A person's success depends on many factors, including education, effort, skills, opportunities, resilience, and environment.

Accepting Diversity Is a Sign of a Civilized Society
Human differences are inevitable. Some people are taller, some shorter; some learn quickly, while others learn at a different pace; some are right-handed, while others are left-handed. Respecting these differences is one of the characteristics of a humane society.

Children should be taught from an early age that being different does not mean being wrong. Every individual has their own characteristics and abilities. This lesson is valuable not only for left-handed children but for all children, because it helps build self-respect and mutual understanding.

Health and Emotional Well-Being Also Matter
Unnecessary pressure or ridicule regarding a physical characteristic can affect a child's emotional well-being. Therefore, children should never be made to feel ashamed of their natural hand preference. Families and educational institutions should create positive and supportive environments.

If a child experiences behavioral or learning difficulties, adults should not automatically blame left-handedness. Instead, the actual cause should be identified. When necessary, parents, teachers, and health professionals should work together to provide appropriate support.

What We Should Do
International Left-Handers Day is not merely a day for people with a particular physical characteristic; it is an opportunity to celebrate diversity and promote acceptance. On this day, we can make a commitment that no child will be forced to change their natural hand preference, ridiculed for using their left hand, or subjected to social prejudice because of it.

Parents need to become more aware, teachers need to be more sensitive, and society needs to move toward evidence-based thinking. Rather than trying to change a person's natural characteristics, we should focus on developing their abilities and potential.

In conclusion, International Left-Handers Day on August 13 reminds us that human beauty does not lie in everyone being the same; it lies in diversity. The hand a person uses to write or perform a task does not determine their worth. Their character, knowledge, skills, humanity, and contributions are what truly define them.

Therefore, instead of trying to “correct” a left-handed child, we should respect their natural preference. Let us create families, schools, and communities where no child feels ashamed of who they naturally are. Giving a child the freedom to grow in their own way means giving their potential the opportunity to flourish. That potential can one day become an asset to the family, society, and the nation.

Author:
Columnist and Public Health Analyst
Founder Chairman, Jatiya rogi Kalyan Society