Do you feel tired all the time? Does it seem like no matter how much sleep you get, you just can’t seem to shake the fatigue?
If so, you’re not alone. Many people with diabetes report feeling tired, and without energy regularly.
Fatigue is one of the most common complaints among people with diabetes.
There are several reasons why tiredness is such a prevalent problem for people with diabetes.
First and foremost, managing diabetes can be exhausting.
Constantly monitoring your blood sugar levels, taking insulin injections or using an insulin pump, and ensuring you’re eating healthy foods, and moving day in and day out can take its toll both physically and emotionally.
Additionally, certain diabetic medications can cause fatigue as a side effect. And finally, having chronically high blood sugar levels can also lead to feelings of lethargy and exhaustion.
Several things can be done to help improve your energy levels and help you feel better overall. In the meantime, learn more about what causes diabetes fatigue and ways you can manage it with your care team.
If you’ve been wondering, “can diabetes make you tired?”, the answer is yes. Fatigue is a common symptom of diabetes, especially when blood sugar levels aren’t well-controlled.
Many people with diabetes feel drained or low on energy because of the body’s challenges in managing blood sugar.
The good news is that by understanding why diabetes causes fatigue, you can take steps to regain steady energy. Below, we explain the scientific reasons diabetes can make you feel so tired and share simple lifestyle habits to help you feel more energized.
Why Diabetes Can Make You Feel Tired
Blood Sugar Highs and Lows: Fluctuations in blood sugar (glucose) levels are a major cause of fatigue in diabetes.
When your blood sugar stays very high, your cells can’t get the glucose they need for fuel (often due to lack of insulin or insulin resistance). As a result, you may feel weak and tired because your cells are essentially starving for energy.
On the other hand, if your blood sugar drops too low (for example, from skipping meals or taking too much insulin), your muscles and brain also don’t get enough fuel, which can make you feel shaky and exhausted.
Extreme highs or lows in blood sugar can both leave you feeling wiped out.
Insulin Resistance: In type 2 diabetes, the body’s cells become resistant to insulin. Insulin is the hormone that helps sugar move from your bloodstream into your cells to be used for energy.
When cells don’t respond to insulin properly (insulin resistance), sugar builds up in the blood instead of feeding your cells. Even though there’s plenty of sugar on board, your cells are “running on empty” and you end up feeling fatigued.
This ongoing energy deficit from insulin resistance is a big reason people with diabetes experience chronic tiredness.
Chronic Inflammation: Diabetes is associated with chronic low-grade inflammation in the body. Inflammation is your immune system’s response to stress or injury; even when it’s mild, it can make you feel unwell.
Research indicates that systemic inflammation is linked to higher fatigue levels in people with diabetes.
In simple terms, having diabetes can put your body in a constant state of stress (due to high blood sugar and related imbalances), and this inflammatory response can leave you feeling weary and worn out.
Dehydration: High blood sugar can cause frequent urination, which in turn leads to dehydration (not having enough water in your body).
When your blood sugar is elevated, your kidneys work overtime to flush out the excess glucose by making more urine.
This means your body is losing extra fluids. Being even a little dehydrated can cause fatigue, because your organs and muscles need proper hydration to function optimally.
In fact, dehydration from high blood sugar is another reason you might feel weak or tired. If you have diabetes, you might notice feeling more energetic on days when you stay well-hydrated versus days when you don’t drink enough water.
Lifestyle Habits to Maintain Steady Energy with Diabetes
Even though diabetes can zap your energy, there are practical daily habits that can help you fight fatigue.
The first step is managing your blood sugar through any medications or insulin your doctor prescribes. Beyond medical treatment, adopting healthy lifestyle habits can stabilize your blood sugar and boost your overall energy.
Here are some simple tips to help you maintain steady energy throughout the day:
- Eat a Balanced Diet: Focus on meals and snacks that keep your blood sugar steady. This means including a mix of lean protein, healthy fats, and high-fiber carbohydrates (like vegetables, beans, and whole grains) instead of lots of refined carbs or sugary foods. A balanced, nutritious diet prevents the rapid spikes and crashes in blood sugar that lead to fatigue. Try not to skip meals, and consider eating smaller portions more frequently if it helps keep your energy level consistent. Managing your portions and limiting sugary drinks or snacks can give you more stable energy over the day.
- Stay Hydrated: Drinking enough water is very important for fighting diabetes fatigue. When blood sugar is high, you lose extra fluids, so you need to replenish them. Even mild dehydration can make you feel tired, so aim to sip water regularly throughout the day. Keep a water bottle with you as a reminder. Also, try to limit sugary drinks (they can spike your blood sugar) and moderate your caffeine – a small amount of caffeine might boost energy, but too much can dehydrate you or affect your sleep later. Staying well-hydrated helps your body function better and can improve your energy levels.
- Get Regular Movement: Light to moderate exercise can actually increase your energy when you have diabetes. When you’re feeling fatigued, exercise might be the last thing you want to do, but even a short walk or gentle activity can help. Physical movement helps your body use insulin more effectively and move glucose into your cells, which lowers your blood sugar and gives your cells energy to burn. Exercise also improves circulation and releases endorphins (feel-good chemicals in the brain) that can make you feel more alert and upbeat. You don’t need to overdo it – simple activities like walking the dog, doing light housework, or stretching can all help fight fatigue. Aim for about 30 minutes of activity most days, with your doctor’s approval, and remember that even small activities add up.
- Manage Stress: Chronic stress can drain your energy and throw off your blood sugar levels. When you feel stressed, your body releases hormones (like cortisol) that can raise blood sugar and make fatigue worse. That’s why finding ways to manage stress is important for people with diabetes. Try relaxation techniques such as deep breathing, meditation, or gentle yoga – these can calm your mind and also improve your blood glucose control. Making time for hobbies you enjoy, connecting with friends or a support group, or talking to a counselor can also help reduce stress. When your stress is under control, you’ll likely sleep better and have more steady energy.
- Prioritize Sleep Hygiene: Getting quality sleep at night gives your body a chance to recharge. Poor sleep or too little sleep can make anyone tired, but it’s especially problematic in diabetes because lack of sleep can affect how well your body uses insulin the next day. Aim for about 7–9 hours of sleep per night, as recommended. To improve your sleep hygiene, try to go to bed and wake up at consistent times, even on weekends. Create a calming bedtime routine (such as turning off screens, dimming the lights, or reading a book) to signal to your body that it’s time to sleep. Good sleep helps regulate your hormones and blood sugar, which in turn can reduce daytime fatigue. If diabetes symptoms like frequent urination are disrupting your sleep, talk to your doctor for strategies (for example, adjusting when you take insulin or limiting fluids right before bed).
- Follow Your Diabetes Care Plan: Don’t forget the basics – taking care of your diabetes overall will help your energy. Take your medications (such as insulin or metformin) exactly as prescribed, and check your blood sugar regularly. Keeping your blood sugar in your target range as much as possible prevents the extreme highs and lows that cause fatigue. It’s also a good idea to work with your healthcare team and attend regular check-ups. They can help adjust your treatment if you’re still feeling very tired. Sometimes fatigue can be a sign of other issues (like anemia, thyroid problems, or depression), so let your doctor know if your tiredness is not improving despite good diabetes control. By staying on top of your diabetes management, you set the foundation for better energy each day.
Staying Motivated
Diabetes-related fatigue can be frustrating, but remember that you’re not alone and there are ways to improve how you feel. It may take some time to figure out the right balance of blood sugar management, diet, exercise, and rest that works for you. Start with small changes and be kind to yourself on days when your energy is low. Over time, controlling your blood sugar and maintaining healthy habits can noticeably improve your energy levels and reduce tiredness. Every step you take – whether it’s choosing a wholesome snack, going for a brief walk, or getting to bed on time – is helping your body fight fatigue. With consistent habits and support from your healthcare team, you can manage diabetes and feel more energetic on a daily basis.
When to see a doctor about fatigue and diabetes
Fatigue and diabetes can both be challenging to diagnose and manage. If you experience frequent or prolonged fatigue, you should keep track of those instances and talk with your doctor.
Similarly, if you are managing or recently diagnosed with diabetes and are experiencing significant fatigue, it is best to let your doctor know right away.
Your doctor will likely run lab tests to determine the underlying cause of your symptoms and may refer you to an endocrinologist who specializes in diabetes treatment if necessary.
It is important not to ignore any signs of fatigue related to diabetes because early detection and management can drastically improve outcomes.
Your health should always be a priority, so never hesitate to visit a doctor if you think it may help.
The bottom line on diabetes and fatigue
Living with diabetes can be exhausting. Between managing blood sugar levels, doctors’ appointments, and dietary restrictions, it’s no wonder that people with diabetes often experience fatigue.
Fatigue is a common symptom of diabetes, but it’s not something you have to live with. By understanding the link between fatigue and diabetes as well as some of the possible causes, you can take steps to manage your fatigue and improve your quality of life.
If you’re feeling exhausted or your fatigue is interfering with your daily activities, talk to your doctor. They can help you determine if other underlying medical conditions are causing your fatigue or offer suggestions for managing diabetes-related fatigue.
