Can You Have Prediabetes Even If You’re Not Overweight?

When most people hear the word prediabetes, they immediately picture someone who is overweight.

But what if I told you that you can be slim, fit into your favorite jeans, and still have prediabetes?

As a nutritionist, I’ve met many people who are shocked when their blood sugar results come back higher than normal. Their first reaction is often:

“But I’m not fat.”

The truth is that body weight is only one piece of the puzzle. More and more people with normal body weight are being diagnosed with prediabetes, and many don’t realize they’re at risk until a routine medical checkup reveals it.

Let’s explore why this happens and what you can do to protect your health.

What Is Prediabetes?

Prediabetes occurs when blood sugar levels are higher than normal but not high enough to be diagnosed as diabetes.

Think of it as a warning light on your dashboard.

Your body is beginning to struggle with controlling blood sugar, but there is still time to reverse the process and prevent Type 2 diabetes.

Without lifestyle changes, many people with prediabetes eventually develop diabetes.

Why Being Slim Doesn’t Guarantee Healthy Blood Sugar

Many people assume that a normal body weight automatically means good health.

Unfortunately, that’s not always true.

You can look healthy on the outside while metabolic changes are happening internally.

Some experts even refer to this as being “thin outside, fat inside” because harmful fat can accumulate around internal organs even when a person’s weight appears normal.

1. You Sit Most of the Day

Imagine this scenario.

You wake up, take tea and bread, drive to work, sit at a desk for eight hours, drive home, watch television, then sleep.

You may not be overeating, but your muscles are barely being used.

Muscles help remove glucose from the bloodstream. When they remain inactive for long periods, blood sugar regulation becomes less efficient.

This is increasingly common among:

• Office workers
• Business owners
• Drivers
• Students
• Remote workers

Even a 30-minute gym session cannot completely offset an entire day of sitting.

2. Your Diet Is High in Refined Carbohydrates

Many slim people stay slim because they don’t eat large quantities of food.

However, the quality of the food matters.

A typical day might include:

• White bread for breakfast
• Mandazi mid-morning
• Chips and soda for lunch
• Biscuits with tea
• White rice for dinner

The portions may be moderate, but the diet repeatedly causes blood sugar spikes.

Over time, the body’s cells become less responsive to insulin, increasing the risk of prediabetes.

3. You Drink Your Sugar

One of the biggest hidden contributors to elevated blood sugar is sugary drinks.

Examples include:

• Soda
• Energy drinks
• Sweetened coffee drinks
• Packaged fruit juices
• Sweetened iced tea
• Excessively sweet milk tea

Many people would never eat ten teaspoons of sugar in one sitting, yet they consume that amount through beverages without realizing it.

4. Chronic Stress Is Raising Your Blood Sugar

Modern life is stressful.

Financial pressure, parenting responsibilities, demanding jobs, relationship challenges, and constant exposure to social media can all contribute to chronic stress.

When you’re stressed, your body releases hormones such as cortisol.

High cortisol levels can:

• Increase blood sugar
• Increase cravings for sugary foods
• Promote fat storage around the abdomen
• Increase insulin resistance

This means stress can affect blood sugar even if your weight doesn’t change.

5. Poor Sleep Is Working Against You

Do you regularly sleep less than seven hours?

Poor sleep can disrupt hormones involved in hunger, metabolism, and blood sugar control.

Many Kenyans are:

• Working late
• Watching television until midnight
• Scrolling social media in bed
• Waking up frequently during the night

Over time, poor sleep can contribute to insulin resistance and increase the risk of prediabetes.

6. Genetics May Play a Role

If your parents, siblings, or close relatives have diabetes, your risk is higher.

This doesn’t mean diabetes is inevitable.

However, it does mean you need to be more proactive about lifestyle habits.

I’ve seen individuals with healthy weights develop prediabetes largely because of a strong family history combined with poor eating habits and physical inactivity.

Signs of Prediabetes That Many People Ignore

Prediabetes often develops silently.

Some people have no symptoms at all.

Others may experience:

• Increased thirst
• Frequent urination
• Fatigue
• Increased hunger
• Difficulty losing abdominal fat
• Blurred vision
• Darkened skin around the neck or armpits

Because these symptoms can be subtle, regular screening is important.

A Real-Life Example

Meet James.

James is 34 years old, weighs 68 kg, and has always considered himself healthy because he’s not overweight.

His daily routine looked like this:

Breakfast:

• Sweet tea
• Two slices of white bread

Lunch:

• Chips
• Sausage
• Soda

Evening:

• White rice
• Beef stew

Exercise:

• Rarely

A routine health check showed his blood sugar was in the prediabetes range.

His weight wasn’t the issue.

His lifestyle was.

After making changes to his diet, increasing physical activity, and reducing sugary drinks, his blood sugar improved within a few months.

How to Reduce Your Risk of Prediabetes

The good news is that prediabetes can often be reversed.

Move More

Aim for at least 150 minutes of physical activity weekly.

Simple options include:

• Brisk walking
• Dancing
• Cycling
• Strength training
• Climbing stairs

Even standing up and walking for a few minutes every hour can help.

Prioritize Protein

Protein helps keep you fuller and supports blood sugar control.

Good options include:

• Eggs
• Fish
• Chicken
• Beans
• Lentils
• Milk
• Greek yogurt

Eat More Fiber

Fiber slows the absorption of sugar into the bloodstream.

Choose:

• Traditional vegetables
• Sukuma wiki
• Spinach
• Beans
• Ndengu
• Fruits
• Whole grains

Reduce Sugary Drinks

Try:

• Water
• Unsweetened tea
• Infused water
• Sparkling water without added sugar

Sleep Better

Aim for 7–9 hours of quality sleep each night.

Good sleep supports healthy blood sugar regulation and appetite control.

Get Tested

If you’re over 30, have a family history of diabetes, or live a sedentary lifestyle, consider regular blood sugar screening even if your weight is normal.

Being slim does not automatically protect you from prediabetes.

Your eating habits, activity levels, sleep quality, stress levels, and family history all influence your blood sugar health.

The encouraging news is that prediabetes is often reversible when detected early.

Don’t wait for symptoms to appear. Small daily changes—walking more, eating more fiber, sleeping better, and cutting back on sugary drinks—can make a significant difference.

Your weight may look healthy on the outside, but your blood sugar tells the real story.