Diabetes can develop in different ways. For some people, symptoms appear quickly and are difficult to miss. For others, the signs can build gradually and be mistaken for tiredness, stress or everyday changes in health.
The main symptoms of diabetes can include feeling very thirsty, peeing more than usual, feeling very tired and losing weight without trying. Other possible signs include blurred vision, slow-healing cuts, genital itching or recurring thrush.
Understanding these symptoms can help people seek advice sooner, especially if changes are persistent, unusual or affecting daily life. This article explains the common signs of diabetes, how symptoms can differ between type 1 and type 2 diabetes, and when to speak to a healthcare professional.
What is diabetes?
Diabetes is a condition where the level of glucose, or sugar, in the blood becomes too high. This can happen when the body does not produce enough insulin, cannot use insulin properly, or both. Insulin is a hormone that helps glucose move from the blood into the body’s cells, where it can be used for energy.
The two main types are type 1 diabetes and type 2 diabetes.
Type 1 diabetes happens when the body’s immune system attacks the cells that make insulin. It is not caused by diet or lifestyle and usually requires lifelong insulin treatment.
Type 2 diabetes happens when the body does not produce enough insulin, or the insulin it produces does not work properly. It is more common than type 1 diabetes and can be linked to factors such as age, family history, ethnicity, weight and activity levels.
What are the early signs and symptoms of diabetes?
The early signs of diabetes are not always obvious. Some people notice several symptoms at once, while others may only notice one or two.
Common symptoms can include:
• Feeling very thirsty
• Peeing more than usual, especially at night
• Feeling very tired
• Losing weight without trying
• Blurred vision
• Cuts or wounds taking longer to heal
• Itching around the genitals
• Recurring thrush
These symptoms do not always mean someone has diabetes, but they should not be ignored if they continue, appear suddenly or feel unusual for you. A GP or healthcare professional can advise whether testing or further assessment is needed.
What are the symptoms of type 1 diabetes?
Type 1 diabetes symptoms can appear quickly, sometimes over days or weeks. They should be taken seriously, especially in children and young people.
A simple way to remember common type 1 diabetes symptoms is the “4 Ts”:
• Toilet: peeing more than usual, including bedwetting in children
• Thirsty: feeling very thirsty and drinking more than usual
• Tired: feeling unusually tired or low in energy
• Thinner: losing weight without trying
Seek medical advice promptly if these symptoms appear suddenly. If someone seems very unwell, confused, drowsy, is breathing differently or has breath that smells fruity, urgent medical help may be needed.
What are the symptoms of type 2 diabetes?
Type 2 diabetes symptoms can be easier to miss because they may develop gradually. Some people may have type 2 diabetes for some time before it is diagnosed.
Symptoms can include:
• Feeling tired
• Feeling very thirsty
• Peeing more than usual
• Unexplained weight loss
• Blurred vision
• Slow-healing cuts or wounds
• Genital itching or recurring thrush
Type 2 diabetes can affect adults and children, although symptoms may not always be obvious. If you are concerned, it is better to ask for advice rather than waiting for symptoms to become more noticeable.
Who may have a higher risk of type 2 diabetes?
Some people have a higher risk of developing type 2 diabetes. Risk factors can include family history, age, ethnicity, weight, physical activity levels and some existing health conditions.
You may have a higher risk of type 2 diabetes if you:
• Have a family history of type 2 diabetes
• Are living with overweight or obesity
• Are less physically active
• Have had gestational diabetes
• Are from certain ethnic backgrounds
• Have previously been told your blood glucose is high
• Have certain health conditions, such as polycystic ovary syndrome
Diabetes UK also offers a free online Know Your Risk tool, which can help people understand their risk of developing type 2 diabetes and what steps they may be able to take next.
When should you seek medical advice about diabetes symptoms?
You should seek medical advice if you notice possible symptoms of diabetes, particularly increased thirst, urinating more than usual, tiredness or unexplained weight loss.
It is especially important to ask for advice if:
• Symptoms appear suddenly
• Symptoms are becoming more frequent
• Symptoms are affecting daily life
• A child has new bedwetting, increased thirst or unexplained weight loss
• You have recurring thrush or slow-healing wounds
• You have risk factors for type 2 diabetes
A GP or healthcare professional can advise whether you need a blood test or further assessment. Diabetes UK states that an HbA1c test is the main blood test used to diagnose type 2 diabetes, as it checks average blood sugar levels over the previous two to three months.
If symptoms are severe, appear suddenly, or someone seems very unwell, seek urgent medical help.
What should you do if you are worried about diabetes?
If you are worried about diabetes symptoms, speak to a GP or appropriate healthcare professional. Try not to self-diagnose or ignore symptoms, especially if they are persistent or unusual.
Before speaking to a healthcare professional, it may help to:
• Write down your symptoms and when they started
• Note whether symptoms are changing or becoming more frequent
• Think about your family history and any known risk factors
• Mention any unexplained weight loss, recurring infections or slow-healing wounds
• Ask whether testing or further assessment may be appropriate
Diabetes is usually managed through NHS care, primary care and specialist diabetes services where needed. Health insurance does not replace medical advice, NHS care or emergency services, but understanding symptoms can help people feel more informed when seeking support.
If you have private medical insurance, check your policy documents or speak to your insurer before arranging private appointments or treatment, as cover can vary depending on your policy.
Can healthy habits reduce the risk of type 2 diabetes?
Healthy habits may help reduce the risk of type 2 diabetes, particularly for people who are at higher risk. They cannot prevent type 1 diabetes, which is not caused by diet or lifestyle.
Practical habits that may support type 2 diabetes prevention include eating a balanced diet, choosing higher fibre carbohydrates where suitable, reducing foods and drinks high in added sugar, keeping active, limiting alcohol and stopping smoking if relevant.
These changes do not need to be dramatic. Small, realistic steps are often easier to maintain, such as walking more often, choosing water or no added sugar drinks, adding more vegetables to meals, or swapping some lower fibre foods for higher fibre options.
However, lifestyle changes should not be used as a substitute for medical advice. If you have symptoms of diabetes, speak to a GP or healthcare professional.
Key takeaways
• Diabetes is a condition where blood glucose levels become too high.
• Common symptoms include increased thirst, peeing more than usual, tiredness and unexplained weight loss.
• Type 1 diabetes symptoms can appear quickly and may need urgent advice.
• Type 2 diabetes symptoms can develop gradually and may be easier to miss.
• Healthy habits may help reduce the risk of type 2 diabetes, but they cannot prevent type 1 diabetes.
• Anyone with possible diabetes symptoms should seek medical advice rather than self-diagnosing.
FAQs
What are the early signs of diabetes?
The early signs of diabetes can include feeling very thirsty, peeing more than usual, feeling tired and losing weight without trying. Some people may also notice blurred vision, slow-healing cuts, genital itching or recurring thrush.
What is the difference between type 1 and type 2 diabetes?
Type 1 diabetes happens when the body cannot produce insulin because the immune system attacks insulin-producing cells. Type 2 diabetes happens when the body does not produce enough insulin or cannot use insulin properly.
Can type 2 diabetes symptoms be easy to miss?
Yes, type 2 diabetes symptoms can develop gradually, which means they may be harder to notice at first. Some people may not have obvious symptoms, so it is important to seek medical advice if you are concerned or have risk factors.
Can diet cause diabetes?
Diet alone does not cause all diabetes. Type 1 diabetes is not caused by diet or lifestyle. Type 2 diabetes risk can be influenced by several factors, including diet, weight, activity levels, family history, age and ethnicity.
Should I see a doctor if I think I have diabetes?
Yes. If you think you have symptoms of diabetes, speak to a GP or appropriate healthcare professional. They can advise whether testing or further assessment is needed.
Disclaimer: This article is for general information only and is not a substitute for medical advice, diagnosis or treatment. If you are concerned about symptoms of diabetes, speak to a GP or appropriate healthcare professional. In a medical emergency, call 999.