Pancreas icon

Each year, 120,000 Australians develop diabetes – and about 10% of them have T1D.

*Diabetes Australia, Diabetes in Australia
Type 1 diabetes (T1D) is an autoimmune disease where the body attacks the cells in the pancreas that make insulin, a hormone needed to turn food into energy.

T1D CAUSES AND SYMPTOMS

Understanding type 1 diabetes

  • What causes T1D? The exact cause is unknown. Usually, your body's defense system attacks the cells in your pancreas that make insulin by mistake. Your genes and things like viruses might also play a part.
  • Who gets it? T1D can develop at any age. While it was once thought of as a childhood disease, over half of new diagnoses are now in adults over 20. Symptoms can appear gradually over weeks, months, or even years.
  • Why see a doctor? Some symptoms look like other illnesses, so it's important to get your blood sugar tested by a doctor. If diabetes isn't treated, it can cause serious health problems.

Below are some common symptoms:

MYTHS VS FACTS

Separating science from
stigma

T1D DIAGNOSIS

Diagnosing diabetes typically starts with measuring
blood sugar levels

If you are experiencing symptoms or have any risk factors, your doctor may recommend a blood sugar test. Here are a few examples of tests that may be done:
Glucometer icon

Random blood glucose test

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Measures current blood sugar and is often the first test done to diagnose T1D
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Fasting blood glucose test

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Measures blood sugar after fasting overnight
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Glycated hemoglobin test

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Also known as the A1C test, measures average blood sugar levels for the past 2-3 months
Glucometer finger prick icon

Autoantibody test

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Used to determine if it's Type 1 or Type 2 diabetes
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Ketone test

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Elevated ketones in the urine or blood indicate can help diagnose T1D
TREATMENT AND TRIALS

Diabetes care isn't always the
same for everyone

There are many options when it comes to managing T1D. Together with
your doctor, you’ll come up with a plan to fit your care needs around
your daily lifestyle. Here are a few areas your management plan could
include:

Medication

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Your care team will help you put together your treatment plan, which can include medicine and lifestyle adjustments.

When diagnosed with T1D, you'll likely need to start taking insulin shots (or wear an insulin pump) every day.

Regular blood sugar checks will help you monitor your progress and keep your blood sugar close to your target goal. Your care team will help you figure out how often to check your blood sugar and what your blood sugar target should be.

Devices

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There are many devices available for the management of T1D. Depending on your current treatment plan, some devices may be a better fit for you over others. Talk to your doctor about which device works best for you.

Monitoring your blood glucose levels:

  • A blood glucose meter allows you to check your current blood sugar level through a finger prick to obtain a blood sample.
  • Continuous glucose monitors (CGMs) are a sensor that is placed on your skin. Your blood sugar levels are then sent to a small device or smartphone.

Delivering insulin to the body:

  • Insulin injections are self-administered doses of insulin delivered through a syringe or pen
  • A smart insulin pen is a reusable pen that connects to a smartphone app. You can track insulin doses and blood sugar levels. Some apps will offer reminders, alerts, and reports.
  • Insulin pumps are wearable devices that automatically deliver a personalised dose of insulin to the body.
  • Automated insulin delivery systems can measure your blood sugar levels and can automatically deliver insulin to the body.

Managing a healthy lifestyle

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Managing a healthy lifestyle and habits is one of the ways you can take care of yourself during your journey with T1D. It's important to focus on the 5 pillars of well-being: movement, food, stress management, sleep, and connection.

For additional community resources to help you feel more connected, visit Breakthrough T1D.

WELL-BEING

Health is more than a
prescription

Taking your medicine is important and so is taking care of your overall health. That's why
Lilly's well-being library has science-backed resources on sleep, food, movement, connection,
and stress management for those living with diabetes.
All Pillars
All Pillars
Connection
Connection
Food
Food
Movement
Movement
Sleep
Sleep
Stress Management
Stress Management
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No information on this site is intended to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified healthcare professional with any questions you may have regarding your condition.
CMAT-27291 | May 2026