Prediabetes at 25: Here Is What to Do Before It Gets Worse

Why Are Young Indians Getting Prediabetes in Their 20s?

A few decades ago, diabetes in a 25-year-old was rare. Now it is not. Urban India, in particular, has seen a sharp climb in blood sugar problems in young adults. The same national survey found that people living in cities had much higher rates of diabetes and prediabetes than those in rural areas, and those with desk jobs had nearly double the prevalence compared to people who do physical work [2].

The reason comes down to how most young city-dwellers live now. Long hours in a chair, no structured exercise, meals from swipe-to-order apps, late nights, stress. Add to that the fact that Indians are genetically more prone to insulin resistance than most other populations, even at a healthy weight, and you have a recipe for blood sugar problems arriving early.

Common reasons prediabetes shows up in your 20s:

• Sitting for most of the day at work with very little movement built into your routine at all.
• Eating a lot of white rice, bread, maida, sugary drinks, and packaged snacks daily.
• Carrying extra weight around the belly, which drives up insulin resistance quite quickly.
• If a parent or a close family member has type 2 diabetes, you have a higher chance of getting it too.
• Chronic poor sleep, which makes your body manage sugar badly even without bad food habits.

Also read: Diabetic Foot: How a Small Wound Leads to Amputation

Prediabetes Symptoms at 25: What Are The Symptoms?

Here is the honest answer: most of the time, nothing. Prediabetes symptoms are either completely absent or so mild that people shrug them off as tiredness or stress. This is exactly why so many people are walking around with it and have no clue.

That said, some people do notice a few things:

• Feeling tired all the time, even after a full night of sleep, with no obvious reason for it.
• Feeling thirsty often and needing to use the bathroom more than usual.
• Vision going slightly blurry at random, then clearing up again on its own.
• Dark patches of skin showing up on the back of the neck, underarms, or inner thighs.
• Getting hungry again very quickly after eating a full meal.

None of these alone means you have prediabetes. But if you have two or more of them and also have risk factors, a blood test is the right call.

Prediabetes Testing: The Numbers You Need to Know

Before talking about specific tests, you need to know what the blood sugar numbers mean. Here is what the ranges look like [3]:

One high reading is not a diagnosis on its own. Doctors repeat the test before confirming anything.

For Indians, there is an extra thing to keep in mind. The body fat thresholds are different. South Asians carry more fat around the organs at a lower body weight, so the risk kicks in at a lower BMI than it does for Western populations [2]. You do not have to look overweight to already be at risk.

The Three Prediabetes Tests Explained Simply

Prediabetes testing involves three main blood tests. Each one works in a different way and is useful for different needs. Here is what each one is:

HbA1c Test

This test gives you an average of what your blood sugar has been doing over the last two to three months. You do not need to fast for it, so you can walk in and get it done at any time. A reading between 5.7% and 6.4% means prediabetes [1].

Think of it like your blood sugar report card for the past quarter, not just one day.

At Eskag Sanjeevani, the HbA1c is one of the first tests our doctors order for younger patients who come in with diabetes risk factors, because it gives the clearest long-term picture.

Fasting Blood Sugar Test

You skip food and water (except plain water) for eight hours before this one. A reading between 100 and 125 mg/dL puts you in the prediabetes zone [3]. It is simple, widely available, and one of the most common tests done in India for diabetes screening.

Oral Glucose Tolerance Test (OGTT)

This one takes a couple of hours. You fast overnight, come in, drink a sweet glucose drink, and then have your blood drawn again after two hours. A reading between 140 and 199 mg/dL at that two-hour mark means prediabetes [1]. Doctors often use this when other results are unclear, or for women with PCOS, who are at higher risk.

How to Bring Your Blood Sugar Back to Normal

Prediabetes does not always last forever. For many people in their 20s, it can improve without medicine by making simple lifestyle changes and sticking to them.

National survey data is very clear: people with physically active jobs had significantly lower rates of diabetes than those sitting at a desk all day [2]. Your body is built to move, and when it does not, sugar builds up in your blood.

What will help you:

• Cycling, walking, swimming, or any movement for at least 30 minutes on most days of the week.
• Cut down on white rice, maida, and sugary drinks; swap them for whole grains, dals, and vegetables.
• Losing some weight, around 5% to 7%, if you are overweight has a big impact on blood sugar [1].
• Sleep seven to nine hours every night; poor sleep makes insulin work worse even with a good diet.
• Reduce stress through whatever works for you, because stress hormones directly push blood sugar up.

If lifestyle changes are not enough, or your numbers are at the higher end of the prediabetes range, a doctor may suggest medication. But that comes later, after you have given changes a fair shot.

When Should You See a Diabetologist?

If your test comes back in the prediabetes range, you do not need to panic, but you do need a plan. A diabetologist, not a general physician, will give you the most targeted advice on what to watch, how to change your diet, and how often to retest.

This matters especially in Kolkata, where lifestyle factors such as rice-heavy diets and low activity are particularly common. Seeing the best diabetologist in Kolkata early means you get a personalised plan before diabetes takes hold, not after.