Start Your Diabetes Risk Test
Start by entering your age, body size and basic metabolic data on the left. Your personalised risk band will appear here.
Diabetes Risk, Symptoms and Blood Sugar Levels Explained
Learn what your diabetes risk score may mean, common warning signs, and the blood sugar and A1C ranges often used in screening.
Common symptoms of high blood sugar
Many people with prediabetes have no clear symptoms, but some people notice warning signs when blood sugar starts running high.
- Feeling more thirsty than usual
- Urinating more often, especially at night
- Low energy or unusual tiredness
- Blurred vision
- Unexplained weight changes
These symptoms can have many causes. A calculator cannot confirm diabetes. Only proper medical testing can do that.
Blood sugar and A1C ranges often used in screening
These ranges are commonly used in many adult screening guidelines. Your country, lab or doctor may use slightly different cut-offs:
| Test | Usual range | Often called “prediabetes” | Often called “diabetes” |
|---|---|---|---|
| Fasting blood sugar (mg/dL) | Below 100 | 100 to 125 | 126 or higher on repeat tests |
| A1C (%) | Below 5.7 | 5.7 to 6.4 | 6.5 or higher on repeat tests |
| 2-hour OGTT (mg/dL) | Below 140 | 140 to 199 | 200 or higher |
These numbers are simplified for education. Only a qualified healthcare professional who knows your history can diagnose prediabetes or diabetes and advise on treatment.
What is prediabetes?
Prediabetes means your blood sugar is higher than usual, but not yet high enough for a diabetes diagnosis. Many people do not realise they have it because symptoms may be mild or completely absent.
What this diabetes risk calculator looks at
SugarRisk estimates your level of risk using several common health factors linked to prediabetes and type 2 diabetes.
- Age – risk tends to rise with age, especially after the mid-30s and more after 45.
- Body size – a higher BMI and a larger waist are often linked to insulin resistance.
- Family history – having a parent or sibling with type 2 diabetes raises lifetime risk.
- Blood pressure – high blood pressure often appears together with metabolic risk.
- Activity level – regular movement can improve insulin sensitivity.
- Blood sugar and A1C – adding lab values can make the estimate more precise.
Common types of diabetes and raised blood sugar
- Prediabetes – an early warning stage where lifestyle changes may reduce future risk.
- Type 2 diabetes – the most common form, often linked with insulin resistance, weight, age and genetics.
- Type 1 diabetes – an autoimmune condition where the pancreas produces little or no insulin.
- Gestational diabetes – raised blood sugar first identified during pregnancy.
What a higher diabetes risk score may mean
A higher SugarRisk score does not mean you definitely have prediabetes or diabetes. It simply suggests that screening, follow-up, or lifestyle review may be worth discussing with a healthcare professional.
- Ask your doctor or nurse whether you should repeat fasting glucose, A1C or other tests.
- Review your current sleep, movement, food habits, stress and smoking status.
- Discuss realistic goals for weight, waist size, blood pressure and blood sugar.
Quick answers about prediabetes
What is prediabetes in one sentence?
Prediabetes means your blood sugar is above the usual range but not yet high enough for a diabetes diagnosis, and it signals a higher future risk of type 2 diabetes and heart disease.
Can prediabetes be reversed?
Many people can move out of the prediabetes range with a combination of weight loss, regular activity and healthier food choices, especially when changes are made early.
Do only people with overweight get prediabetes?
No. Extra weight around the waist is a strong risk factor, but age, genetics, hormones, sleep, stress, medications and other conditions can also raise risk in people who appear to have a normal weight.
Is one high blood sugar reading enough to say I have diabetes?
Usually not. Many guidelines recommend repeat testing, and your healthcare team will interpret the result together with symptoms, history and other lab values.
Is an A1C of 5.7 to 6.4% always dangerous?
Not always. This range is often labelled prediabetes or high risk, but the meaning depends on other factors such as age, BMI, waist size, blood pressure, family history and your overall health context.
When to talk to a doctor sooner
The following situations usually deserve prompt medical attention or follow-up:
- If your fasting blood sugar is 126 mg/dL or higher on more than one test, or your A1C is 6.5% or higher.
- If your fasting blood sugar is between 100 and 125 mg/dL or your A1C is between 5.7 and 6.4%, especially if you also have a larger waist, high blood pressure or family history.
- If you notice symptoms such as unusual thirst, frequent urination, blurred vision, unexplained weight loss or persistent fatigue.
- If you are pregnant or planning pregnancy and have any history of gestational diabetes or raised blood sugar.
- If your numbers are changing quickly over time, even if they are still inside the usual range.
Practical steps that may help lower long-term risk
Everyone is different, but these general strategies are often discussed when trying to reduce diabetes risk:
- Know your baseline numbers. Keep track of fasting glucose, A1C, blood pressure and cholesterol results.
- Set a realistic weight or waist goal. Even modest progress can improve insulin sensitivity for many people.
- Move more consistently. Walking and regular daily activity can help a lot when done long term.
- Improve food quality over time. More fibre, vegetables, beans, nuts and home-cooked meals can support better metabolic health.
- Protect sleep and manage stress. Poor sleep and chronic stress can make blood sugar control harder.
- Plan follow-up testing. Trends over time matter more than one isolated number.
Important: SugarRisk does not provide medical care, diagnosis or treatment. Never delay or ignore professional medical advice because of something you read on this page. If your numbers worry you or you feel unwell, seek medical care.