Type 2 diabetes increases the risk of peripheral artery disease (PAD), a circulatory condition in which arteries become narrower, reducing blood flow to muscles and tissues.
PAD often develops gradually and may go unnoticed until circulation problems become more severe. Having a better understanding of the connection between diabetes and PAD can help you better protect your vascular health and avoid complications.
To help you understand this link more clearly, the vascular experts at Michigan Vascular explain how diabetes affects the arteries, the risk factors that increase the likelihood of diabetes and PAD, potential complications, and the lifestyle changes and treatment options that may help manage both conditions.
How Diabetes Damages Your Arteries
Type 2 diabetes damages the vascular system by raising blood sugar, the main factor leading to Peripheral Artery Disease (PAD). High glucose levels harm arteries.
Chronically high blood sugar acts like sandpaper on blood vessels, roughening and inflaming their lining and promoting plaque buildup.
As plaque (fatty deposits) accumulates along the artery walls, the vessels gradually become narrower and less flexible. This process, called atherosclerosis (hardening of the arteries), can restrict blood flow throughout the body, including to the legs and feet.
Diabetes can spur PAD through related conditions. Many with diabetes also have high blood pressure, abnormal cholesterol, or insulin resistance, all of which hasten artery plaque.
Together, these factors increase the likelihood that blood vessels supplying the lower extremities will narrow or become blocked. Over time, reduced blood flow to the legs and feet can make it harder for tissues to receive the oxygen and nutrients they need. This can lead to leg pain during activity, slow-healing wounds, and a higher risk of infection or other complications associated with PAD.
Risk Factors for Type 2 Diabetes and Peripheral Artery Disease
Type 2 diabetes and peripheral artery disease (PAD) share core risk factors that damage vessels and promote plaque, reducing blood flow to the lower limbs.
Some risk factors relate to lifestyle, others to age, genetics, or medical history. Combined, these factors raise your risk for diabetes and PAD.
Common risk factors for both conditions include:
- Smoking: Tobacco use damages blood vessels, increases inflammation, and accelerates plaque buildup in the arteries.
- High blood pressure: Elevated blood pressure can place added stress on artery walls and contribute to vascular damage over time.
- High cholesterol: Excess cholesterol in the bloodstream can lead to plaque accumulation that narrows the arteries.
- Obesity or excess body weight: Being overweight is associated with insulin resistance, metabolic changes, and increased strain on the cardiovascular system.
- Physical inactivity: Lack of regular physical activity can contribute to poor circulation, weight gain, and reduced metabolic health.
- Older age: The risk of both diabetes and peripheral artery disease increases with age, as blood vessels naturally lose their elasticity (flexibility to expand and contract), and the likelihood of plaque (fatty deposits) buildup increases.
- Family history: A family history of diabetes, cardiovascular disease, or vascular conditions may increase an individual’s overall risk.
- Poorly controlled blood sugar: Persistently elevated glucose (blood sugar) levels can damage blood vessels and speed up the progression of atherosclerosis (hardening and narrowing of the arteries).
Identifying and managing risk factors early is crucial for protecting long-term vascular health and reducing the risk of circulation-related complications.
Why PAD Is Harder to Detect in People With Diabetes
Peripheral artery disease (PAD) often emerges silently in people with diabetes, as diabetes-related issues can obscure early circulation symptoms.
One reason PAD may go unnoticed is diabetic neuropathy, which is a type of nerve damage caused by long-term elevated blood sugar levels. Neuropathy can reduce sensation in the feet and legs, making it harder to feel pain or discomfort that might otherwise signal a circulation problem.
In many people without diabetes, PAD may cause leg pain during walking, often called intermittent claudication. However, when nerve damage is present, those warning signs may be less noticeable or absent. As a result, PAD can progress for some time before symptoms become more apparent.
Diabetes can also contribute to changes in the small blood vessels and tissues of the lower extremities. Reduced circulation, combined with decreased sensation, may increase the likelihood that minor injuries, blisters, or pressure points go unnoticed, thereby raising the risk of wounds or infections.
Because PAD’s early signs can be subtle in diabetes, routine medical and vascular checks help spot problems sooner and lower the risk of serious issues.
Complications of Diabetes and Peripheral Artery Disease
When type 2 diabetes and peripheral artery disease (PAD) occur together, they can significantly increase the risk of serious circulation-related complications.
Diabetes damages blood vessels and nerves, while PAD limits blood flow to the lower extremities. This combination restricts oxygen and nutrient delivery, especially to the legs and feet.
Spotting complications early and seeking prompt medical care can guide treatment and support lasting vascular health.
Slow Healing Wounds
One of the most common complications is slow-healing wounds or ulcers, especially on the feet. Reduced circulation from PAD can limit the body’s ability to repair damaged tissue, while diabetic neuropathy may make it harder for a person to notice injuries early. Even small cuts or pressure points can sometimes develop into more serious wounds if circulation is impaired.
Infection
Poor blood flow can increase the risk of infections. When tissues do not receive adequate oxygen and nutrients, the body may have more difficulty fighting bacteria and supporting normal healing processes.
Restricted Blood Flow
In more advanced cases, severely reduced circulation may lead to critical limb ischemia, a serious condition in which blood flow to the limbs becomes dangerously restricted. This can cause persistent pain, nonhealing wounds, and tissue damage (tissue death may occur without enough blood supply).
Heart Attack or Stroke
Because both diabetes and PAD are associated with atherosclerosis, the combination of these conditions may also increase the risk of cardiovascular events such as a heart attack or stroke. This is why managing blood sugar levels, vascular health, and other risk factors is important for people at risk for either condition.
Lifestyle Changes That Help Manage Diabetes and PAD
Healthy lifestyle habits play an important role in managing both type 2 diabetes and peripheral artery disease (PAD). Certain daily health choices can help improve blood sugar control, enhance circulation, and reduce strain on the vascular system.
While medical care is often necessary to manage these conditions, healthcare providers frequently recommend lifestyle changes as part of a broader care plan designed to manage diabetes and protect vascular health.
Your doctor may recommend additional lifestyle changes, but these are some of the most common lifestyle strategies that may help manage diabetes and PAD:
Maintaining Healthy Blood Sugar Levels
Managing blood glucose is an important part of protecting blood vessels. Consistently elevated blood sugar can damage the inner lining of arteries and contribute to plaque buildup. Following a diabetes management plan recommended by a healthcare provider can help reduce this risk.
Regular Physical Activity
Exercise can improve circulation, support heart health, assist with blood sugar management, and promote healthy weight management. Activities such as walking and moderate strength training are often recommended for people with PAD because they may help improve blood flow to the legs over time.
Stopping Smoking
Smoking is one of the most significant risk factors for peripheral artery disease. Tobacco use damages blood vessels, promotes inflammation, and accelerates the narrowing of arteries. Quitting smoking may help slow the progression of vascular disease and support better overall circulation.
To learn more, read “Smoking and PAD: What to Know.”
Following a Heart-Healthy Diet
A balanced diet that prioritizes vegetables, fruits, whole grains, lean proteins, and healthy fats may help support cardiovascular health. Reducing foods high in saturated fats, sodium, and added sugars may also help manage cholesterol levels and blood pressure.
To learn more, read “Lower Your Risk of PAD With These Foods.”
Maintaining a Healthy Weight
Excess body weight is associated with insulin resistance and increased cardiovascular risk. Achieving and maintaining a healthy weight may help improve blood sugar control and reduce stress on the circulatory system.
Monitoring Foot Health
For people with diabetes, routine foot care is important because nerve damage and reduced circulation can make injuries harder to detect and heal. Regularly checking the feet for cuts, blisters, or skin changes may help identify potential problems early.
Treatment Options for Peripheral Artery Disease in Patients With Diabetes
Managing peripheral artery disease (PAD) in people with type 2 diabetes often involves a combination of medical care, monitoring of vascular health, and treatment aimed at improving circulation to the legs and feet. The exact approach depends on the severity of artery narrowing, the presence of symptoms, and your overall health.
A vascular specialist can assess symptoms, perform appropriate testing, and recommend treatment options that align with your condition and overall health, and may include:
Addressing Underlying Risk Factors
Treatment plans typically begin with addressing the underlying risk factors that contribute to both diabetes and vascular disease.
Healthcare providers may recommend strategies to manage blood sugar levels, blood pressure, and cholesterol, as well as lifestyle changes that support cardiovascular health.
Prescription Medications
Your doctor may prescribe medications to help manage symptoms or reduce the risk of blood clots and further plaque buildup in the arteries.
Medications are often used as part of a broader plan to help improve blood flow and lower the risk of complications.
Vascular Testing
When circulation problems are suspected, vascular testing may be used to evaluate arterial blood flow.
Noninvasive tests such as the ankle brachial index or vascular ultrasound can help identify areas where blood vessels may be narrowed or blocked. These tests allow providers to determine whether additional treatment may be needed.
Surgery and Advanced PAD Treatment
If PAD significantly restricts blood flow, vascular procedures may be considered to help restore circulation and reduce the risk of complications such as nonhealing wounds or tissue damage.
In this case, vascular specialists typically perform noninvasive vascular testing to evaluate circulation and identify areas where arteries may be narrowed or blocked.
Depending on the location and severity of the blockage, treatment may involve minimally invasive endovascular procedures, such as angioplasty or other techniques used to open narrowed arteries. In more advanced cases, vascular surgery may be recommended to bypass blocked arteries and restore circulation.
At Michigan Vascular Center, PAD management may involve a combination of vascular testing, medical management, minimally invasive procedures, or surgical treatment, depending on a patient’s condition and circulation needs.
PAD Care in Flint, Michigan | Michigan Vascular Center
If you are experiencing symptoms of PAD, such as leg pain, slow-healing wounds, numbness or weakness in the legs, or have been diagnosed with PAD and are looking for a Michigan vascular specialist experienced in PAD management, a vascular evaluation at Michigan Vascular Center can help identify the cause and guide treatment.
At Michigan Vascular Center in Flint, patients have access to specialized vascular care focused on diagnosing and managing conditions that affect blood flow, including PAD management. To schedule a consultation, contact Michigan Vascular Center to speak with a member of the care team.
