Obesity is more than simply being overweight. It is a chronic health condition in which excess body fat can affect health and increase the risk of several diseases.
Obesity can develop because of many factors working together, including eating patterns, physical activity, sleep, genetics, medicines, medical conditions, stress and the environment in which we live.
Most importantly, obesity is not simply a lack of willpower. It is a complex condition, and understanding the reasons behind weight gain is an important first step toward healthier choices.
1. What Is Obesity?
Obesity means having an excessive amount of body fat that may affect health.
One commonly used measure is बॉडी मास इंडेक्स (बीएमआई).
For adults:
| बीएमआई | Classification |
|---|---|
| 18.5 से नीचे | वजन |
| 18.5–24.9 | स्वस्थ वजन |
| 25.0–29.9 | अधिक वजन |
| 30 or above | मोटापा |
BMI is calculated using:
बीएमआई = किलोग्राम में वजन ÷ मीटर² में ऊंचाई
For example, a person weighing 80 kg and measuring 1.70 m tall would have a BMI of about 27.7.
However, BMI is only a screening measure. It does not directly measure body fat and does not tell the whole story about a person’s health. Waist circumference and other health measurements may also be useful when assessing weight-related health risks.
Remember: A BMI number should not be used on its own to decide whether someone is healthy or unhealthy.
2. What Causes Obesity?
There is usually no single cause of obesity.
It develops through a combination of factors that can influence how much energy the body takes in, uses and stores.
Common factors include:
Eating patterns
Regular consumption of energy-dense foods and drinks, particularly those high in added sugars and unhealthy fats, can contribute to weight gain.
शारीरिक निष्क्रियता
A lifestyle with little movement reduces the amount of energy the body uses.
Genetics
Genes can influence appetite, metabolism, fat storage and how the body responds to food and physical activity.
Sleep
Poor sleep patterns may affect appetite, food choices and weight regulation.
तनाव और भावनात्मक खान-पान
Long-term stress can affect eating behaviour and make it harder to maintain healthy habits.
Medicines and medical conditions
Some medicines and certain medical conditions can contribute to weight gain.
Environment
The availability, affordability and marketing of highly processed, energy-dense foods, along with limited opportunities for physical activity, can influence weight.
3. Why Is Obesity a Health Concern?
Obesity can increase the risk of several health problems.
इसमे शामिल है:
- टाइप 2 मधुमेह
- उच्च रक्तचाप
- दिल की बीमारी
- Stroke
- Osteoarthritis and other musculoskeletal problems
- Sleep-related breathing problems such as obstructive sleep apnoea
- Some types of cancer
The risk of many health problems tends to increase as excess weight increases.
But there is an important point here:
Weight is only one part of the health picture.
Two people with the same BMI can have very different health profiles. That’s why a healthcare professional may consider waist circumference, blood pressure, blood sugar, cholesterol, medical history and other factors when assessing health risk.
4. Obesity Is Not Simply About Willpower
This deserves special attention.
It is easy to say:
“Just eat less and exercise more.”
But real life is more complicated.
Obesity can be influenced by biology, genetics, eating behaviour, sleep, stress, medicines, medical conditions and the surrounding environment.
This does not mean that healthy habits are unimportant. They are extremely important.
It means that people struggling with their weight should not be blamed or made to feel that they have simply “failed”.
A better approach is to understand the factors affecting weight and then work on realistic, sustainable changes.
5. Can Obesity Be Prevented?
In many cases, the risk of overweight and obesity can be reduced through healthy habits and supportive environments.
Some useful habits include:
- Eating more vegetables, fruits, legumes, whole grains and nuts
- Limiting foods and drinks high in free sugars
- Being physically active regularly
- Reducing long periods of sitting
- Getting adequate, good-quality sleep
- Managing stress
- Maintaining healthy eating and activity habits over the long term
WHO also emphasizes that obesity prevention is not only an individual’s responsibility. The availability and affordability of healthy food, opportunities for physical activity and the wider environment all influence people’s choices.
6. Health Problems Linked With Obesity
Obesity can affect many parts of the body. The risk is not the same for everyone, but carrying excess body fat is associated with a higher risk of several chronic conditions.
इसमे शामिल है:
Type 2 Diabetes
Excess body fat can increase the risk of developing type 2 diabetes. Maintaining a healthy weight, eating a balanced diet and being physically active can help reduce this risk.
High Blood Pressure and Heart Disease
Obesity is associated with high blood pressure and cardiovascular diseases such as heart disease and stroke.
Joint Problems
Extra weight can place additional stress on joints. Obesity is associated with musculoskeletal problems such as osteoarthritis.
Sleep Apnoea
People living with obesity have an increased risk of obstructive sleep apnoea, a condition in which breathing repeatedly stops and starts during sleep.
Some Cancers
Obesity is associated with an increased risk of several types of cancer, including some cancers of the breast, colon, liver, kidney and uterus.
The important message is that the risk of health problems can increase even before a person reaches very high levels of BMI.
7. Small Changes Can Make a Difference
Weight management does not have to begin with an extreme diet or a sudden change in lifestyle.
For many people, starting with small, realistic changes is more practical.
उदाहरण के लिए:
- Add more vegetables to meals.
- Choose whole grains more often.
- Reduce sugary drinks.
- Pay attention to portion sizes.
- Include regular physical activity.
- Reduce long periods of sitting.
- Maintain a regular sleep schedule.
- Keep track of eating habits if it helps you understand your patterns.
A healthy diet should provide adequacy, balance, moderation and variety. There is no single diet that is suitable for everyone.
Think long term
The goal should not be a quick change on the weighing scale.
The better goal is to develop habits that you can continue for months and years.
8. When Should You Talk to a Doctor?
Consider speaking with a healthcare professional if:
- Your weight has been increasing steadily.
- You are finding it difficult to lose weight despite consistent efforts.
- You have high blood pressure, high blood sugar or abnormal cholesterol.
- You snore heavily or feel unusually sleepy during the day.
- You have joint pain that is affecting your daily activities.
- You take medicines that may affect your weight.
- You have another medical condition that may be affecting your weight.
A doctor can look at your overall health, rather than judging health from weight alone.
Depending on your situation, they may consider BMI, waist circumference, blood pressure, blood sugar, cholesterol, medical history, medicines and other factors.
If weight gain is sudden or unexplained, it is especially important to discuss it with a healthcare professional.
9. Frequently Asked Questions
Is obesity only caused by eating too much?
नहीं।.
Eating patterns and physical activity are important, but obesity can also be influenced by genetics, sleep, stress, medicines, medical conditions, the environment and other biological factors.
Is BMI enough to tell whether I am healthy?
नहीं।.
BMI is a useful screening measure, but it does not directly measure body fat or provide a complete picture of health. Healthcare professionals may use additional measurements and health information.
Do I need to follow a strict diet to lose weight?
आवश्यक रूप से नहीं।.
A sustainable eating pattern is generally more useful than a very restrictive diet that is difficult to maintain. A healthy diet should be balanced, varied and appropriate for the person’s individual needs.
Is exercise important even if I don’t lose weight?
हाँ।.
Regular physical activity has important health benefits beyond weight loss, including benefits for cardiovascular health and overall fitness.
For adults, WHO recommends at least 150 minutes of moderate-intensity physical activity per week, with additional activity potentially providing further benefits.
Should I try to lose weight quickly?
Rapid weight-loss approaches are not suitable for everyone.
A healthcare professional can help determine a safe and realistic approach based on your health, medicines, age and other factors.
10. A Healthier Approach to Weight Management
Understanding obesity is the first step.
The next step is to focus on what you can control.
Instead of asking:
“How can I lose weight as quickly as possible?”
try asking:
“What healthy habits can I continue for the rest of my life?”
That could mean making your meals more balanced, becoming more active, sleeping better, managing stress or simply becoming more aware of your eating habits.
There is no single solution that works for everyone.
If you are concerned about your weight or health, speak with a qualified healthcare professional who can help you choose an approach appropriate for you.
Remember
Healthy weight management is not about perfection. It is about making sustainable choices, one step at a time.
Medical note
This article is for general health information and education. It does not replace individual medical advice, diagnosis or treatment. If you have a medical condition, take medicines, are pregnant, or are concerned about your weight or symptoms, consult your doctor or another qualified healthcare professional.
सूत्रों का कहना है
- World Health Organization — Obesity and overweight
- World Health Organization — Obesity: Health consequences of being overweight
- World Health Organization — Healthy diet

