Peripheral artery disease — narrowing of the arteries that carry blood to your legs — doesn't come out of nowhere. It's driven largely by the same forces that clog arteries elsewhere in the body, and the most important ones are things you can act on. Understanding what raises your risk is the first step toward lowering it.
The risk factors that matter most
PAD is a form of atherosclerosis, the buildup of fatty plaque inside arteries. A handful of factors stand out for how strongly they push that process along:
- Smoking. This is the heaviest hitter. Current smoking carries one of the highest associations with developing PAD of any single risk factor (Epidemiology of Peripheral Artery Disease). It also worsens the disease once it's present, as we'll come back to.
- Diabetes. High blood sugar damages arteries over time and is among the strongest risk factors for PAD — and especially for its most severe forms, including non-healing foot wounds (Epidemiology of Peripheral Artery Disease).
- High blood pressure. There's a dose-response relationship between blood pressure and PAD: risk climbs as pressure rises, and is roughly two-and-a-half times higher when systolic pressure reaches 140 mm Hg or more (Epidemiology of Peripheral Artery Disease).
- High cholesterol. Elevated LDL cholesterol feeds plaque formation, which is why cholesterol control is a pillar of prevention.
- Age and other factors. Risk rises after 65 (and earlier with other risk factors), and chronic kidney disease and family history add to it.
Notice a pattern: aside from age and genetics, most of these are things you can change. Risk also compounds — someone who smokes and has diabetes and high blood pressure isn't just adding those risks together, they're multiplying them. That's discouraging if you look at it one way, but empowering if you look at it another: acting on even one or two of these factors can shift your whole trajectory, and acting on several can shift it dramatically.
What you can control — starting with smoking
If you smoke, quitting is the single most powerful move you can make. People with PAD who keep smoking face faster progression of their disease and a higher risk of amputation, along with more graft failure, restenosis after procedures, heart attack, and death (Smoking Cessation in Peripheral Artery Disease, ACC). The benefits of stopping are just as striking: quitting improves walking distance and, in one cohort, was associated with markedly lower five-year mortality compared with continued smoking — with the biggest gains in those with the most advanced disease (Smoking Cessation in Peripheral Artery Disease, ACC). It's genuinely never too late.
Beyond smoking, the foundation of PAD prevention and care is straightforward — and it's the same foundation that protects your heart:
- Control blood sugar if you have diabetes, and get your feet checked regularly.
- Manage blood pressure and cholesterol to guideline targets; statins and other medications are often part of this.
- Move your body. Physical activity — and, for people with symptoms, structured or supervised exercise — improves walking ability and functional capacity (Exercise Therapy in the Management of Peripheral Arterial Disease).
- Eat well and keep a healthy weight.
Guidelines emphasize that people with PAD should have a comprehensive program of risk-factor reduction, structured exercise, and lifestyle modification to lower the risk of cardiovascular events — with smoking cessation and appropriate antiplatelet and statin therapy at the core (2016 AHA/ACC PAD guideline).
Why this protects more than your legs
Here's a reason to take PAD risk factors seriously even if your legs feel fine: narrowed leg arteries are a signal of atherosclerosis throughout the body. The same plaque that limits blood flow to your calf is often present in the arteries feeding your heart and brain. That's why an ankle-brachial index of 0.9 or lower is recognized as a risk enhancer that helps guide broader cardiovascular prevention (2016 AHA/ACC PAD guideline).
The practical upshot is encouraging: every step you take against PAD risk — quitting smoking, controlling diabetes, blood pressure, and cholesterol, staying active — is also a step against heart attack and stroke. You're not managing one condition in isolation; you're protecting your whole cardiovascular system at once.
When to get your circulation checked
Prevention is best, but early detection matters too, because PAD can be present with mild or no symptoms at first. It's reasonable to talk with a clinician about your circulation if you:
- Smoke now or used to
- Have diabetes
- Are over 65 (or over 50 with other risk factors)
- Have high blood pressure, high cholesterol, or kidney disease
- Notice leg cramping when you walk that eases with rest, cold feet, or a slow-healing sore
Checking is simple. The ankle-brachial index compares blood pressure at the ankle and arm — quick, painless, and no needles — and can flag reduced blood flow before symptoms limit your life. Catching PAD early gives you the most room to act, whether that means doubling down on risk-factor control or, if needed, minimally invasive treatment down the road.
If you'd like a plain-language starting point, our 2-minute PAD assessment can help you gauge your risk, and you can read more about the minimally invasive PAD treatments we offer. If leg pain when walking is already part of your picture, our article on leg pain when you walk and PAD goes deeper on that early sign.
