Medicosnext
Dr. Shikha Pandey
She completed her MBBS from Patan Academy of Health Sciences and her MD in Paediatrics from the Nepalese Army Institute of Health Sciences. She is currently working at the Kathmandu Institute of Child Health as a Paediatric Registrar, with a strong interest in providing compassionate and evidence-based care for children.
The TakeAway Message
Did you know that in the past four decades, the prevalence of childhood obesity has surged by nearly 300%? This alarming statistic signals a major shift in global health, driven largely by modern lifestyle changes rather than just genetics. Childhood obesity is characterized by a Body Mass Index (BMI) or weight-for-length ratio falling above the 95th percentile on standard growth charts. While biological factors like hormonal disorders can play a role, the epidemic is primarily fueled by the easy availability of high-calorie junk food combined with a sedentary culture where screens have replaced outdoor play.
“Over the past 40 years, the prevalence of childhood obesity has risen by nearly 300%, signaling a critical shift in global health.”
The implications of this shift are severe and two-fold. Physically, children are now developing conditions previously seen only in adults, such as high blood pressure, heart disease, and sleep apnea. Psychologically, the stigma of being overweight often leads to bullying, anxiety, and depression. Prevention requires a proactive, family-centered approach. Experts recommend the “Traffic Light Diet”, eating “green” fruits and vegetables freely, moderating “yellow” staples like dairy and grains, and avoiding “red” sugary or fried foods. Furthermore, limiting screen time to under two hours daily and ensuring regular sleep are critical steps. By monitoring growth charts early and fostering active environments at home and school, we can protect our children’s future health and well-being.
Childhood obesity is a growing morbidity in today’s context. Due to changing lifestyles and unhealthy eating habits, its prevalence has increased significantly. Over the past 40 years, the prevalence of childhood obesity has risen by nearly 300%.
What is childhood obesity and overweight?
Childhood obesity refers to excess body weight in children; however, in medical practice, specific cut-off values are used to distinguish between overweight and obesity.
In children older than 2 years, Body Mass Index (BMI) is calculated using the child’s height and weight. The BMI is then plotted on an age- and gender-specific growth chart. Based on this:
• A BMI between the 85th and 95th percentile is classified as overweight.
• A BMI above the 95th percentile is classified as obesity.
In children younger than 2 years, obesity can also be present. For this age group, weight-for-length charts are used instead of BMI. Based on these charts:
• Weight-for-length between the 85th and 95th percentile indicates overweight.
• Weight-for-length above the 95th percentile indicates obesity.
What are the causes of childhood obesity
Common and preventable causes
➢ Eating too much junk food, fast food and sugary drinks
➢ Less physical activity and less outdoor play
➢ Spending too much time on TV, mobile phones, or video games
➢ Poor or irregular sleep habits
➢ Overeating and frequent snacking
Other causes
➢ Hormonal problems like thyroid disorders
➢ Long term use of some medications like antipsychotics, steroids
➢ Genetic conditions present since birth
➢ Possible gut health changes (still being studied)
Why are children becoming overweight today?
Childhood obesity is increasing in today’s world mainly because children are eating more unhealthy food with less physical activity. Easy availability of junk food, fast food, and sugary drinks has changed eating habits. Children spend more time on mobile phones, television, and video games, which reduces outdoor play and physical activity. Busy family lifestyles, working parents, and limited time for home-cooked meals also contribute. Irregular sleep patterns and less supervision of children’s diet and daily routine further increase the risk of weight gain.
Why parents should be concerned?
Like adults, obese children are at risk of developing several health problems. These conditions can affect the child’s current health as well as future well-being. Hence, it is important for parents to recognize and address obesity early. Common complications include high blood pressure, high cholesterol levels, heart disease, breathing problems such as asthma and obstructive sleep apnea, and other health issues.
Emotional and Psychological Problems:
In today’s context, physical appearance is given great importance, especially among adolescents. Being different from peers can make overweight or obese children more vulnerable to bullying at school. This can negatively affect their self-esteem and may lead to mental health problems such as depression, anxiety, and low confidence.
How can parents identify childhood obesity?
Notice if the child is gaining weight fast. Compare weight with other children of the same age. If parent is unsure, they can take their child to a nearby pediatrician for a growth assessment, the doctor can check BMI and plot it on a growth chart to see if the child is overweight or obese.
What can parents do?
Parents play a very important role in preventing and managing childhood obesity. They should encourage healthy eating, more physical activity, and limited screen time. The American Academy of Pediatrics recommends no screen time for children under 2 years and limiting it to 1–2 hours per day for older children. They also suggest the Traffic Light Diet, which helps parents choose foods easily.
“The ‘Traffic Light Diet’ simplifies nutrition: eat Green foods freely, moderate the Yellows, and stop at the Reds.”
So, the parents should choose more green foods, be careful with yellow food and limit red food as much as possible.
Role of schools
Schools can encourage regular physical activity and promote healthy eating habits. Schools can also raise awareness among children about obesity and related health problems. For children who are already obese, schools should ensure they are not bullied or treated differently by classmates, supporting their emotional well-being.
How can it be prevented?
Childhood obesity can be prevented by careful monitoring of a child’s weight and BMI during health check-ups. Ensuring a balanced diet with healthy foods, encouraging regular physical activity, and limiting screen time are important steps. Exclusive breastfeeding for the first six months of life can also help reduce the risk of obesity later on.
“The epidemic is primarily fueled by the easy availability of high-calorie junk food combined with a sedentary culture where screens have replaced outdoor play.”
When to visit a doctor?
Parents should consult a doctor whenever they feel their child’s weight is not appropriate for their age. It is especially important to seek medical advice if an infant appears obese, if the child has developmental delays, delayed puberty, or experiences a sudden and rapid increase in weight.
Conclusion:
By promoting healthy eating, regular physical activity, limited screen time, and careful monitoring of growth, parents, schools, and healthcare providers can help prevent childhood obesity and its complications. Early awareness and intervention are key to ensuring children grow up healthy, both physically and emotionally.
