New Delhi: Type 2 diabetes is no longer a health condition associated only with middle-aged and elderly people. Increasingly, individuals in their 20s and 30s, and even some teenagers, are being diagnosed with the disease. This trend is becoming a major health concern in India, where sedentary lifestyles, unhealthy diets and rising obesity levels are contributing to the growing number of cases.
An early diagnosis can have serious long-term implications. Someone who develops diabetes at the age of 30 may need to manage the condition for several decades. During this period, poorly controlled blood sugar can gradually damage important organs, including the heart, kidneys, eyes and nerves.
A 2025 research series published in The Lancet, titled Understanding the Drivers and Consequences of Early-Onset Type 2 Diabetes, highlights that people diagnosed before the age of 40 may experience a more aggressive form of the disease. The research points to a faster decline in the pancreas’s insulin-producing capacity, greater challenges in controlling blood glucose and a higher risk of developing complications.
These findings underline the importance of identifying diabetes early and ensuring continuous medical care.
Why Is Type 2 Diabetes Increasing Among Young People?
Changes in everyday habits over recent decades have contributed significantly to the growing risk of diabetes. Physical activity has declined, while the consumption of calorie-rich meals, sugary beverages and highly processed snacks has increased.
Long working hours, sitting for extended periods, excessive screen time, inadequate sleep and continuous stress can further worsen the situation.
These factors can contribute to weight gain and insulin resistance. Insulin is a hormone that helps the body use glucose from the bloodstream for energy. When the body’s cells become less responsive to insulin, the pancreas has to produce more of the hormone to maintain normal blood sugar levels. Over time, it may struggle to meet this increased demand.
Excess fat around the waist is another important risk factor. Indians can develop type 2 diabetes at a younger age and even at a lower body weight compared with many other populations. This means that someone who appears physically slim may still have excessive abdominal fat, increasing their chances of developing insulin resistance.
Family history and other existing health conditions also play an important role in determining an individual’s diabetes risk.
Why Is Early-Onset Diabetes a Serious Concern?
Developing diabetes at a younger age means that a person may live with elevated blood sugar levels for a much longer period. If the condition is not properly controlled, prolonged exposure to high glucose can damage blood vessels and nerves.
Possible complications include heart disease, kidney damage, vision problems and nerve-related disorders. Some individuals may also develop fatty liver disease and difficulties with walking.
The impact is not limited to physical health. Young adults are often building careers, raising families and handling major personal responsibilities. Managing a long-term condition and dealing with its complications can affect their overall quality of life during these important years.
The 2025 Lancet research series also highlights the need to address the broader healthcare requirements of younger diabetes patients. Mental health and reproductive health deserve attention alongside blood sugar management.
Regular medical consultations and monitoring of other health indicators are therefore essential. Simply checking glucose levels occasionally may not be enough to manage the condition effectively.
Who Is at a Higher Risk of Developing Diabetes?
Certain people should be especially aware of their risk of developing type 2 diabetes.
These include individuals who:
- Have a family history of diabetes, particularly in parents or siblings.
- Are overweight or have excess fat around the abdomen.
- Spend most of their day sitting and follow unhealthy eating habits.
- Have polycystic ovary syndrome (PCOS) or a history of diabetes during pregnancy.
- Have high blood pressure, abnormal cholesterol levels or fatty liver disease.
One of the biggest challenges is that diabetes can develop without noticeable symptoms. Blood sugar levels may remain higher than normal for a long time before a person becomes aware of the problem.
Some common warning signs include excessive thirst, frequent urination, unexplained weight loss and unusual tiredness. However, not everyone experiences these symptoms.
For this reason, people should not depend only on their age or physical symptoms to assess their risk. Those with a family history, abdominal obesity or other risk factors should discuss appropriate blood sugar screening with a healthcare professional, even if they feel healthy.
How Can Type 2 Diabetes Be Prevented or Delayed?
Type 2 diabetes can often be prevented or delayed through regular physical activity, healthier food choices and other sustainable lifestyle changes, particularly when risk factors are identified early.
Prediabetes is an important stage to recognise. At this point, blood sugar levels are above the normal range but have not reached the threshold for a diabetes diagnosis. Identifying this condition provides an opportunity to make changes that may prevent or delay its progression.
Physical activity is one of the most effective ways to improve overall metabolic health. Adults should aim for at least 150 minutes of moderate-intensity exercise every week, along with muscle-strengthening activities. Brisk walking, cycling and swimming are some useful options. Avoiding long periods of continuous sitting and staying active throughout the day can also make a difference.
Diet is equally important. Limiting sugary drinks, refined carbohydrates and highly processed foods while eating more vegetables, whole grains, pulses and protein-rich foods can support healthier blood sugar levels.
Maintaining a healthy weight, getting sufficient sleep and avoiding tobacco are also important steps. For overweight individuals with prediabetes, losing even 5–7% of body weight can significantly reduce the risk of developing type 2 diabetes.
However, lifestyle improvements are not a substitute for medical treatment. People already diagnosed with diabetes should follow their prescribed treatment and attend regular check-ups. Along with blood sugar control, monitoring blood pressure, cholesterol, kidney function and eye health can help reduce the risk of long-term complications.
The growing number of younger people affected by diabetes highlights the importance of preventive healthcare at an early age. Looking healthy or having no obvious symptoms does not necessarily mean that blood sugar levels are normal. Understanding personal risk factors, undergoing screening when recommended and adopting healthier habits can help prevent or delay diabetes and support better long-term health.
By Dr Balusu Manohar Sai, Consultant Endocrinologist, Department of General Medicine, GITAM Institute of Medical Sciences and Research (GIMSR), Visakhapatnam.
Disclaimer: This article is based on research findings and information shared by the medical expert mentioned above. It is intended for general awareness and educational purposes and should not be treated as professional medical advice, a diagnosis or a treatment recommendation. Readers should consult a qualified healthcare professional for individual medical concerns, appropriate screening and treatment guidance.