Written by Dr. Matthew Capozzi, DPM, FACFAS, CWS (board-certified foot surgeon and wound specialist) · Medically reviewed by the CircuFiber Scientific Advisory Board · Updated: October 28, 2026

Diabetes and depression are strongly associated: people with diabetes are more likely to experience depression than people without it, and research suggests they have nearly twice the odds. The link runs in both directions. The daily stress of managing diabetes, biological factors such as inflammation, and shared lifestyle risks can all raise the chance of depression, while depression makes diabetes harder to manage and is linked with a higher risk of developing type 2 diabetes. Depression is treatable, and treating it is part of good diabetes care.

Key Takeaways

• Depression is more common with diabetes. Studies have found that people with diabetes are more likely to experience depression than those without the disease, with nearly twice the odds.
• The association is bi-directional. Having diabetes increases the risk of developing depression, and being depressed is linked with a higher chance of being diagnosed with diabetes later in life.
• Three main pathways explain the link: the stress of daily diabetes self-management, biological connections such as inflammation and hormonal disruption, and shared lifestyle risk factors such as inactivity, poor diet, chronic stress and lack of sleep.
• Depression makes diabetes harder to manage. People with depression are less likely to follow their diabetes management plan, which can lead to poor glycemic control and a higher risk of complications.
• Integrated care works best. Screening for depression and treating mental and physical health together improves quality of life and clinical outcomes.

Is there an association between diabetes and depression?

Yes, there is a well-documented association between diabetes and depression. Over the years, we've observed a significant link between diabetes and depression. These aren't just isolated health issues – they're deeply intertwined conditions that can have a profound impact on an individual's quality of life. It's not uncommon for people grappling with the daily challenges of managing diabetes to also struggle with feelings of sadness, hopelessness, or anxiety.

Dealing with chronic diseases like diabetes often brings about lifestyle changes that may lead to emotional distress. This reality suggests there's more than just a casual relationship between these two health concerns; it points towards an underlying complexity that deserves our attention. In fact, numerous studies have shown that individuals living with diabetes are at a much higher risk of developing depression compared to those without the disease. The Centers for Disease Control and Prevention (CDC) describes the same connection between diabetes and mental health.

Recognizing and addressing this association can greatly improve patient care. Understanding how and why diabetes and depression are connected allows us to better manage both conditions, paving the way for comprehensive treatment approaches that consider both physical and mental health. For a broader overview, read our guide to the relationship between diabetes and depression.

What is diabetes mellitus, and why does it affect mental health?

Diabetes mellitus is a chronic condition that occurs when our body can't effectively use the sugar (glucose) in our blood as energy. This happens because our body either doesn't produce enough insulin or can't effectively use the insulin it does produce. It affects mental health because it demands constant, lifelong self-management. Here's why insulin is so crucial:

• Insulin is a hormone produced by your pancreas.
• It allows your body to use glucose from carbohydrates in food for energy.
• Insulin also helps to store glucose for future use and keeps our blood sugar level from getting too high (hyperglycemia) or too low (hypoglycemia).

When things go awry with this process, we end up dealing with diabetes mellitus. And unfortunately, once you have it, it's usually there to stay. There are primarily two types of diabetes mellitus we often talk about:

1. Type 1 diabetes: This type occurs when your body fails to produce insulin at all. People with type 1 diabetes must take insulin every day to stay alive.
2. Type 2 diabetes: The more common variety, where your body doesn't make or use insulin well. While lifestyle factors like obesity greatly increase risk, genetics play a significant part too.

While there isn't currently any cure for diabetes mellitus, that doesn't mean it can't be managed effectively. With careful attention and proper management strategies, including healthy eating habits, regular physical activity and medication if necessary, living a normal life with diabetes is very much possible. The more we know about these conditions, the better equipped we are to manage and overcome them.

How common is depression in people with diabetes?

Depression is substantially more common in people with diabetes than in the general population; research suggests folks with diabetes have nearly twice the odds of suffering from depression. The figures below are the ones reported in the studies this article draws on. Estimates vary between studies because they measure different things: a formal diagnosis of major depressive disorder is less common than depressive symptoms picked up on a screening questionnaire.

Looking at population data, there's a strong correlation between the two conditions:

These figures underscore why it's crucial for healthcare providers not just to focus on managing their patient's physical condition but also to pay attention to their mental wellbeing. Remember, if you're struggling with both conditions, you're not alone.

Why are diabetes and depression linked?

Diabetes and depression are linked through a complex interplay of risk factors: the psychological burden of managing diabetes, biological changes in the body and brain, shared lifestyle factors, and genetics. These two conditions don't just randomly co-exist, and these factors aren't isolated variables; they interact in ways that further escalate risks.

The stress of managing diabetes every day

Managing diabetes can be incredibly stressful. Diabetes mellitus puts a heavy burden on an individual's life, making them more susceptible to depression. Dealing with frequent blood sugar checks, dietary restrictions, and fear of complications can be overwhelming and take a heavy emotional toll, leading to feelings of sadness or even hopelessness. This constant struggle might trigger depressive symptoms in some people. Ongoing chronic stress and diabetes mellitus feed into each other.

Biological links: inflammation and hormones

Some scientists believe there may be biological connections between the two conditions as well, such as inflammation affecting brain function or hormonal disruptions impacting mood. Researchers believe that inflammation caused by diabetes could lead to changes in brain function leading to depression. Read more on the connection between inflammation, stress, and diabetes.

Shared lifestyle risk factors

Lifestyle plays a significant role in both conditions. Unhealthy eating habits and lack of physical activity not only increase the risk for diabetes but also contribute towards mental health issues like depression. The shared lifestyle risk factors include:

• Sedentary lifestyle
• Poor diet
• Chronic stress
• Lack of sleep

Genetics and brain chemistry

Genetics and chemical imbalances in the brain could also potentially link these two conditions together. This area is still being researched, and it is one reason the association is considered more than a reaction to a difficult diagnosis.

Side effects of medication

Certain medications used for controlling blood sugar levels in diabetic patients may also induce depressive symptoms. If you notice a change in mood after starting or changing a medication, talk to your doctor; do not stop a prescribed medication on your own.

Does depression increase the risk of developing diabetes?

Yes, there's growing evidence suggesting bi-directional links between these two chronic diseases. That means not only does having diabetes increase your risk for developing depression, but being depressed also heightens your chances of getting diagnosed with diabetes later in life. Shared lifestyle factors such as inactivity, poor diet, chronic stress and lack of sleep are part of the explanation, which is why depression is worth addressing early, whether or not you have been diagnosed with diabetes.

How does depression affect diabetes management and outcomes?

Depression makes diabetes harder to manage, and that has measurable consequences for blood sugar control, complications and healthcare costs. Diabetes is a demanding disease: it necessitates continuous self-care, including constant monitoring of blood sugar levels, careful diet control, regular physical activity, and medication management. When you add depression into the mix, it becomes even more challenging for patients to keep up with this rigorous routine.

Lower adherence to the diabetes management plan

Studies have shown that depressed individuals are less likely to adhere to their diabetes management plan, which can lead to poor glycemic control and an increased risk for diabetes complications. Here's some data to back this up:

This table illustrates how depression substantially increases the chances of non-compliance among diabetic patients. Untreated depression can negatively affect blood glucose control and overall wellbeing, leading to complications like heart disease or kidney damage. See our article on depression and diabetes complications for more detail.

Higher healthcare costs

The cost burden of diabetes and depression together isn't merely additive; it multiplies due to the complex interplay between physical and mental health issues, leading to more frequent healthcare visits and hospitalizations. To put things into perspective:

• Diabetic patients are twice as likely to experience depression.
• The combination of these illnesses leads to up to 4 times higher healthcare costs than treating each condition separately.

Quality of life and mortality

The association between these two conditions has serious implications for quality of life, overall healthcare costs, and even mortality rates. Diabetes affects every aspect of our lives, and the same can be said for depression. Both are chronic diseases that require ongoing management and both can significantly impact quality of life.

How are diabetes and depression treated together?

Diabetes and depression are best treated together through an integrated, holistic approach that goes beyond merely managing individual symptoms. These two health issues often come hand in hand, creating a complex web of symptoms that require a comprehensive treatment approach. There's an urgent need to integrate mental health care into the overall treatment regime for diabetes patients to improve their quality of life and clinical outcomes.

In practice, that means asking your diabetes care team to screen for depression, telling them how you are feeling emotionally as well as physically, and treating both conditions as part of one plan. Reach out to your healthcare provider or local support groups; they can provide resources and strategies to help manage both your physical and emotional health effectively. Learn more about treating diabetes and depression together, and about the difference between diabetes distress and depression, which often call for different kinds of support.

If you're living with diabetes, don't underestimate the power of maintaining positive mental health; it could make all the difference in managing your condition effectively. Our guide to diabetes and mental health covers practical day-to-day steps.

When should you see a doctor about depression and diabetes?

See your doctor if feelings of sadness, hopelessness, anxiety or loss of interest last for more than two weeks, or if low mood is making it hard to check your blood sugar, eat well, take medication or keep appointments. It's crucial to recognize signs of depression early and seek professional help if needed, because depression is treatable and treating it supports better diabetes control. Your primary care doctor, endocrinologist or diabetes educator can screen you and refer you to a mental health professional.

If you are in crisis, contact your doctor or local emergency services.

Frequently asked questions about diabetes and depression

Can diabetes cause depression?

Diabetes can contribute to depression. The daily stress of managing diabetes, worry about complications, and biological factors such as inflammation are all thought to raise the risk. Not everyone with diabetes develops depression, but people with diabetes have nearly twice the odds compared with people without it.

Can diabetes cause depression and anxiety?

Diabetes is associated with both depression and anxiety. Many people grappling with the daily challenges of managing diabetes struggle with feelings of sadness, hopelessness, or anxiety, and the two often occur together. Read more about the diabetes and anxiety connection.

Is fatigue from diabetes a sign of depression?

Fatigue can come from diabetes itself, for example when blood sugar is too high or too low, and it is also a common symptom of depression. Because the causes overlap, persistent tiredness together with low mood or loss of interest is worth raising with your doctor, who can check both your blood sugar control and your mental health.

Is depression linked with both type 1 and type 2 diabetes?

Yes. Depression is associated with both type 1 and type 2 diabetes. Both types require constant self-management, which is one of the main drivers of the link, so people with either type benefit from regular depression screening as part of their diabetes care.

Does depression make blood sugar harder to control?

Depression can make blood sugar harder to control, mainly because it makes the routine of monitoring, meal planning, physical activity and taking medication harder to keep up. Studies show people with diabetes and depression are less likely to adhere to their management plan, which can lead to poor glycemic control and a higher risk of complications.

References, studies and sources

• Mayo Clinic. Diabetes and depression: Coping with the two conditions. https://www.mayoclinic.org/diseases-conditions/diabetes/expert-answers/diabetes-and-depression/faq-20057904
• Centers for Disease Control and Prevention (CDC). Diabetes and Mental Health. https://www.cdc.gov/diabetes/living-with/mental-health.html
• National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Diabetes. https://www.niddk.nih.gov/health-information/diabetes
• American Diabetes Association. Diabetes information and resources. https://diabetes.org/
• MedlinePlus (U.S. National Library of Medicine). Diabetes. https://medlineplus.gov/diabetes.html

About the author: Dr. Matthew Capozzi, DPM, FACFAS, CWS, is a board-certified foot surgeon through the American Board of Foot and Ankle Surgery. He is a Diplomate of the American Academy of Wound Management and Fellow of the American College of Foot and Ankle Surgeons. He completed a three-year residency program in Foot and Ankle Reconstructive Surgery at St. Francis Hospital & Medical Center in Hartford, CT in 2010. Dr. Capozzi is a board-certified Wound Specialist® granted by the American Academy of Wound Management.

Healthcare disclaimer: Always consult your physician before beginning any program. This general information is not intended to diagnose any medical condition or to replace your healthcare professional. If you experience any pain or difficulty, stop and consult your healthcare provider. CircuFiber socks are a general wellness product intended to promote a temporary increase in local blood flow and circulation; they are not intended to diagnose, treat, cure, or prevent any disease. Individual results vary.