Why ‘skinny diabetes’ is rising in urban India, expert explains hidden risk

Many people believe diabetes mostly affects those who are overweight. If someone looks slim, exercises sometimes, and wears the same clothing size for years, most people assume they are healthy. But doctors say this idea is no longer always true.

A growing number of people in urban India who appear thin or normal weight are being diagnosed with diabetes or prediabetes. This condition is often called “skinny diabetes.” It describes people who may not look overweight but still have poor metabolic health and rising blood sugar levels.

Experts say this trend is becoming more common because modern city lifestyles are changing how the body functions. Desk jobs, poor sleep, stress, processed foods, and low muscle mass are creating health problems that may not show on the weighing scale.

Dr Gagandeep Singh, a metabolic health expert, says insulin resistance is now being seen in people who look completely healthy by traditional standards. That means a person may appear fit from the outside while their body is struggling inside.

Why body weight does not tell the full story

For many years, Body Mass Index (BMI) has been used to judge health. BMI compares weight with height and places people into categories such as underweight, normal, overweight, or obese.

While BMI can be useful in some cases, it does not always show what is happening inside the body. It cannot tell:

• How much muscle a person has

• Where fat is stored

• How healthy blood sugar levels are

• How the liver is functioning

• Whether someone has insulin resistance

This is especially important for South Asians, including many Indians. Research has shown that South Asians often store fat differently from some other populations. Even when body weight looks normal, fat may collect around internal organs such as the liver, pancreas, and abdomen.

This type of fat is called visceral fat. It is more harmful than fat under the skin because it can disturb hormones, increase inflammation, and raise diabetes risk.

So a person may look slim but still carry unhealthy internal fat.

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What is happening inside the body

The real problem in skinny diabetes is metabolism, not appearance.

When the body eats carbohydrates such as white rice, bread, sweets, sugary drinks, or refined snacks, food turns into glucose. Insulin helps move that glucose into cells for energy.

But over time, poor habits can make cells less responsive to insulin. This is called insulin resistance. When this happens, the body needs to produce more insulin to control blood sugar.

Eventually, the pancreas may struggle to keep up. Blood sugar begins to rise, leading to prediabetes or diabetes.

Common reasons this happens in slim people include:

• High intake of refined carbohydrates

• Low physical activity

• Sitting for long hours

• Low muscle mass

• Poor sleep

• Chronic stress

• Irregular eating patterns

Muscle is especially important because it helps absorb glucose from the blood. A slim person with low muscle mass may struggle to process sugar efficiently.

That is why some thin people may develop diabetes even if they do not gain much weight.

Signs many people ignore

Because these individuals do not look overweight, warning signs are often missed or dismissed.

Some common signals include:

• Feeling sleepy or tired after meals

• Sudden hunger after eating

• Slight increase in belly fat despite stable weight

• Dark patches on the neck or underarms

• Borderline fasting sugar levels

• High triglycerides in blood tests

• Low energy levels

• Difficulty losing belly fat

These signs may seem small, but they can point to early metabolic problems.

Many people only discover the issue during a routine health check-up when fasting sugar or HbA1c levels come back high.

Why urban India is seeing more cases

Experts say city life has created habits that quietly damage metabolic health.

Many urban workers spend long hours sitting in offices, cars, or at home screens. Physical movement is much lower than in earlier generations. At the same time, food choices often include packaged snacks, takeaways, sugary drinks, and frequent late-night meals.

Stress is another major factor. Pressure from work, traffic, finances, and lack of rest can increase cortisol, a stress hormone linked with insulin resistance.

Sleep problems are also common in cities. Staying awake late, screen exposure, and irregular schedules can affect hormones that control hunger and blood sugar.

Together, these habits can create diabetes risk even in people who look slim.

What actually helps

The solution is not always weight loss. In many cases, the goal is to improve metabolic strength.

Experts recommend focusing on the following habits:

Build muscle through strength training

Lifting weights, resistance bands, bodyweight exercises, or gym training can increase muscle mass. More muscle helps the body use glucose better.

Reduce refined carbohydrates

Cutting down on sweets, sugary drinks, white bread, fried snacks, and processed foods may help stabilise blood sugar.

Eat more protein and fibre

Include dal, eggs, paneer, fish, curd, beans, vegetables, nuts, and seeds in meals. These foods support better metabolism and help control hunger.

Improve sleep quality

Aim for regular sleep timing and enough rest each night. Good sleep supports insulin function.

Manage stress

Walking, yoga, meditation, hobbies, and taking breaks can help lower chronic stress levels.

Stay active through the day

Even if you exercise, sitting all day can still be harmful. Try to move regularly, stretch, or walk between work hours.

Why regular testing matters

Since skinny diabetes can remain hidden for years, regular check-ups are important, especially if there is a family history of diabetes.

Useful tests may include:

• Fasting blood sugar

• HbA1c

• Lipid profile

• Waist measurement

• Liver health checks

These tests can detect problems early when lifestyle changes may work best.

The bigger message

Looking thin is no longer a guarantee of being healthy. A person’s real health depends on how their body functions, not only how it looks.

Skinny diabetes is a reminder that normal weight does not always mean low risk. In today’s urban lifestyle, invisible health problems can grow quietly for years.

The best approach is to focus less on the weighing scale and more on strength, sleep, movement, stress control, and regular health checks. That is where true metabolic health begins.