Prediabetes lifestyle in teenagers

Overview

Prediabetes is a condition where your blood sugar levels are higher than normal, but not high enough to be type 2 diabetes. It's like a warning sign that tells you to make some healthy changes to prevent diabetes from developing.

Yes, prediabetes is becoming more common in teenagers, particularly in those who have excess weight, a family history of diabetes, or are from certain ethnic backgrounds.

It mainly affects teenagers who are overweight, inactive, or have a family history of type 2 diabetes. It can also affect teens with certain conditions like polycystic ovary syndrome (PCOS) or who belong to ethnic groups at higher risk, such as African American, Hispanic, Asian American, or Pacific Islander.

Symptoms

Common symptoms

• Often no symptoms at all.
• Dark, velvety patches on the skin (usually on the neck, armpits, or groin) – a condition called acanthosis nigricans.

Symptoms in children

• Same as above: no symptoms or dark skin patches.
• Sometimes increased thirst or frequent urination.
• Feeling very tired or having blurred vision.

Symptoms in older adults

• Often no symptoms.
• May have increased thirst, frequent urination, fatigue, or blurred vision.

Causes

Main causes

• Insulin resistance – the body's cells don't respond well to insulin, so blood sugar builds up.
• Excess body fat, especially around the belly.
• Lack of physical activity.

Risk factors

• Overweight or obesity.
• Family history of type 2 diabetes.
• Physical inactivity (less than 60 minutes of activity most days).
• Unhealthy diet high in sugary drinks, processed foods, and low in fiber.
• Being of certain ethnicities: African American, Hispanic, Asian American, Pacific Islander, or Native American.
• Having polycystic ovary syndrome (PCOS) or a history of gestational diabetes in the mother.

When to see a doctor

See a doctor urgently if:

• If you have extreme thirst, need to urinate very often, have unexpected weight loss, or feel very sick (nausea, vomiting, confusion).

Book a routine appointment if:

• If you have risk factors (overweight, family history, dark skin patches), ask your doctor about checking your blood sugar.
• If you notice any of the common symptoms or are concerned about your health.

Diagnosis

A doctor diagnoses prediabetes with a simple blood test. They will check your blood sugar levels after fasting or measure your average blood sugar over a few months.

Tests that may be done

• Fasting blood glucose test – checks your blood sugar after not eating for at least 8 hours.
• HbA1c test – shows your average blood sugar level over the past 2–3 months.
• Oral glucose tolerance test – measures your blood sugar before and after drinking a sugary liquid.

What to expect at your appointment

The tests are simple blood draws done at a clinic or lab. Your doctor will explain the results and let you know if they show prediabetes. They will then talk with you about steps to take to improve your health.

Treatment

Treatment focuses on lifestyle changes to lower blood sugar and prevent type 2 diabetes. For teenagers, this means healthy eating, regular physical activity, and managing weight if needed. In some cases, a doctor may recommend medication, but lifestyle changes are the main approach.

Self-care at home

• Eat more vegetables, fruits, whole grains, and lean proteins (like chicken, fish, beans).
• Drink water instead of sugary sodas, juices, or energy drinks.
• Limit fast food, chips, cookies, and other processed snacks.
• Aim for at least 60 minutes of moderate to vigorous physical activity every day (like brisk walking, biking, dancing, or sports).
• Stay at a healthy weight for your age and height.
• Get enough sleep (8–10 hours for teens) and find healthy ways to handle stress, like talking to a friend or doing a hobby.

Medical treatments

If lifestyle changes are not enough and your risk is high, your doctor may prescribe medication to help control blood sugar. Always take any medication exactly as your doctor tells you. Never start or stop medication on your own.

When is surgery considered?

Surgery is not a treatment for prediabetes.

Living with this condition

Living with prediabetes means making daily choices that support healthy blood sugar. This includes eating balanced meals, being active, and checking in with your doctor regularly. It can feel like a lot at first, but many small changes add up to big results.

Lifestyle tips

• Get the whole family involved in cooking healthy meals and being active together.
• Find physical activities you enjoy so exercise feels fun, not like a chore.
• Limit screen time (TV, phone, computer) to less than 2 hours per day outside of schoolwork.
• Keep a routine – eat meals at regular times and get consistent sleep.
• Track your progress with your doctor using blood sugar checks if advised.

Diet and exercise

Focus on simple swaps: replace sugary drinks with water or unsweetened tea, eat a piece of fruit instead of candy, and take a walk after dinner. Aim for a mix of aerobic exercise (like jogging or swimming) and strength training (like push-ups or lifting weights) to build muscle and help your body use insulin better.

Mental health and emotional wellbeing

Dealing with a condition like prediabetes as a teen can feel stressful or overwhelming. You might feel anxious about your health or frustrated with changes. It's okay to feel this way. Talk to a parent, school counselor, or a trusted adult. If you ever feel very sad, hopeless, or think about hurting yourself, reach out for help immediately – call a mental health crisis line or talk to someone you trust.

Prevention

Yes, prediabetes can often be prevented or reversed by adopting a healthy lifestyle early. Making good choices now can stop prediabetes from turning into type 2 diabetes.

Screening programmes

Doctors may recommend screening for prediabetes starting at age 10 or at puberty if a child is overweight or obese and has other risk factors (family history, ethnic background, signs of insulin resistance).

Complications

If left untreated

• Prediabetes can progress to type 2 diabetes, which is a more serious condition.
• Type 2 diabetes can lead to heart disease, kidney damage, nerve damage, eye problems, and other health issues.

Long-term outlook

The outlook is very hopeful. Prediabetes is reversible for many teens with healthy lifestyle changes. By eating well, staying active, and keeping a healthy weight, you can often bring your blood sugar back to normal and dramatically lower your risk of developing type 2 diabetes. Your healthcare team is there to help you every step of the way.

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