Clogged leg arteries often hide, and when they hurt, Medicare pays for walking

Key takeaways

• About 6.5 million Americans 40 and older have peripheral artery disease, or PAD, and up to 4 in 10 of them have no leg pain at all, according to the CDC³.
• Since May 2017, Medicare has covered up to 36 supervised walking sessions over 12 weeks for people whose leg pain comes from PAD¹².
• A 2013 Cochrane review of 14 trials found no evidence that ginkgo gives people with PAD a meaningful gain in walking distance⁸.
• Bleeding from a varicose vein is an emergency, so call 911, the National Heart, Lung, and Blood Institute says⁹.
• About half of people with a deep-vein clot have no symptoms, and sudden trouble breathing or chest pain that worsens with a deep breath needs medical help right away¹¹.

In May 2017, Medicare agreed to pay for a treatment for clogged leg arteries that involves no pill, no stent and no surgery¹. It’s walking.

The rules are specific. A trained staff member coaches you through up to 36 sessions over 12 weeks, each lasting 30 to 60 minutes¹. You walk until the leg pain is moderate to near its worst, rest, and go again².

Most “circulation” products are the opposite. Foot baths, cayenne capsules and vibration plates promise better blood flow, yet few have been tested on the problems that cost people their legs or lives. Compression socks do have real uses, though narrower ones, as you’ll see below.

The serious problems are common and often quiet. Peripheral artery disease, or PAD, a narrowing of the arteries that feed the legs, affects about 6.5 million Americans 40 and older, and up to 4 in 10 feel no leg pain³.

This article covers how blood moves, which circulation problems deserve attention, and what the evidence says about the remedies on the shelf.

Blood makes a round trip, and your calves pump the return

Your heart pushes blood out through arteries, which branch into ever-smaller tubes. The smallest, the capillaries, hand off oxygen and pick up waste. Veins carry the blood back.

The trip out is powered by each heartbeat. The trip back, from your feet to your chest, is mostly uphill when you’re standing.

Two features make that climb possible. Veins have one-way valves that keep blood moving toward the heart, and when you walk, your lower-leg muscles squeeze the veins and push blood upward⁹. That’s why long stretches of sitting or standing, with the calves idle, are risk factors for vein trouble⁹.

So circulation problems come in two kinds. Supply problems happen when arteries narrow. Return problems happen when valves fail or a clot blocks a vein. The fixes and warning signs differ.

Clogged leg arteries often cause no pain at all

PAD usually comes from the same fatty buildup, called plaque, that narrows heart arteries⁷. That’s why it matters far beyond the legs. People with PAD have a higher risk of heart attack and stroke, the CDC says³.

The classic symptom is claudication: aching, cramping or tired muscles in the buttock, thigh or calf when you walk, easing within a few minutes of rest⁵. Many people never get it. The 2024 PAD guideline from the American College of Cardiology, the American Heart Association and nine other groups says 20% to 59% of people with confirmed PAD have no exertional leg symptoms⁴.

Others have pain but blame something else. The AHA notes that people often mistake PAD for arthritis or sciatica, and people with diabetes may confuse it with nerve pain⁵.

Other clues include slow-healing sores on the feet or toes, one foot cooler than the other, slow-growing toenails, little hair on the legs and erectile dysfunction, especially in men with diabetes⁵. Erection problems have many causes, but blocked blood flow is one of them, so they’re worth mentioning to a clinician.

The CDC lists smoking, diabetes, high blood pressure, high cholesterol and age over 60 among the risk factors³. Smokers have almost three times the PAD risk of nonsmokers, the AHA says⁶. The CDC adds that Black Americans face a higher risk³.

The main test is simple. An ankle-brachial index, or ABI, compares blood pressure at your ankle with pressure in your arm³. A low ankle pressure points to narrowed leg arteries.

Who should get one is debated. The AHA’s patient page says people with risk factors should be screened even without symptoms⁶. The 2024 guideline is more measured, calling screening “reasonable” for people at higher risk and recommending the test when an exam suggests PAD⁴. A later article in this series on heart screening covers that debate.

Medicare covers a walking prescription for leg pain

For people with claudication, the 2024 guideline gives supervised exercise therapy, or a structured community program with coaching, its strongest rating backed by its highest grade of evidence⁴. Medicare calls it the recommended first treatment for this kind of leg pain².

Medicare’s rules, under a national coverage decision effective May 25, 2017, look like this¹²:

• Who qualifies: people with leg pain on walking caused by PAD.
• How much: up to 36 sessions over 12 weeks, each 30 to 60 minutes. Medicare’s regional contractors may approve 36 more with a second referral.
• Where: a hospital outpatient department or a doctor’s office, with trained staff and a clinician on site.
• First step: a face-to-face visit with the clinician treating your PAD, who must talk with you about lowering your heart and artery risks.

When we checked in October 2026, Medicare’s coverage database still listed the 2017 decision as the only version of this rule¹.

The supervision matters. The guideline rates unstructured exercise, simply being told to walk more, as having uncertain benefit for walking ability⁴. Arm-cranking machines and other non-walking exercise can also help⁴.

MedlinePlus, from the National Library of Medicine, describes the home version: walk until it hurts, rest, and repeat, and talk with your clinician before you start⁷.

Medicines also play a part, and they aren’t in competition with walking. A prescription drug called cilostazol can improve walking distance, though the guideline says people with heart failure shouldn’t take it⁴. Statins, blood pressure control and antiplatelet drugs lower the risk of heart attack and stroke⁴. MedlinePlus warns not to stop aspirin or clopidogrel without talking to your provider⁷.

Two other options didn’t pass the guideline’s review. It advises against chelation therapy and the older drug pentoxifylline for claudication, finding no benefit⁴.

When the return trip fails: varicose veins and clots

Varicose veins are swollen, twisted veins just under the skin, usually in the legs⁹. They form when weak valves or vein walls let blood pool and flow backward⁹.

When that backflow affects the deep leg veins too, it’s called chronic venous insufficiency¹⁰. Legs ache, feel heavy or cramp, and swell. Symptoms get worse with standing and better when your feet are up¹⁰. Over time, the skin near the ankles can change color, thicken or break into slow-healing sores⁹¹⁰.

Everyday habits ease the strain, according to the NHLBI: keep moving, break up long stretches in a chair or on your feet, and now and then lie down with your legs propped higher than your heart⁹. Compression stockings can relieve the aching and may help leg sores heal, but they treat symptoms, not the backward flow itself⁹. Clinicians can close or remove bad veins with heat, injections or small incisions⁹.

One fact surprises many people. The NHLBI calls any bleeding from a varicose vein a medical emergency and says to call 911⁹.

A clot is the more dangerous return problem. A deep vein thrombosis, or DVT, is a clot in a deep vein, usually in the leg. About half of people with one have no symptoms¹¹. When symptoms appear, they include swelling, pain, warmth and redness in one leg or arm¹¹.

The danger is a piece breaking off and lodging in the lungs, a pulmonary embolism. Its signs include trouble breathing, a fast or irregular heartbeat, chest pain that worsens with a deep breath or cough, coughing up blood, lightheadedness and fainting¹¹. The CDC says to see a doctor as soon as possible for DVT symptoms and to seek medical help immediately for signs of a pulmonary embolism¹¹.

Long flights get a lot of attention. The CDC’s travel guide puts the absolute risk for flights over four hours at about 1 in 4,656 person-flights, or roughly 2 in 10,000 by our math¹². Most travel clots happen in people who already have risk factors, such as recent surgery, cancer, pregnancy or a past clot¹².

For travelers at higher risk on trips longer than six hours, the American College of Chest Physicians suggests well-fitted, below-the-knee compression stockings. For travelers without risk factors, it doesn’t recommend them¹². Our travel article covers the trials behind that advice.

Cold fingers are usually Raynaud’s, and usually mild

In cold weather, your body narrows the small blood vessels in your skin to hold heat in your core. In Raynaud’s, that response overshoots. Fingers or toes turn pale or white, then blue, and then throb or tingle as blood returns, which can take about 15 minutes¹³.

Most cases are primary Raynaud’s, which isn’t caused by another illness and can be very mild, according to Mayo Clinic¹³. It often starts between ages 15 and 30 and is more common in women¹³.

Secondary Raynaud’s is less common and more serious. It is tied to another condition, such as scleroderma, lupus or rheumatoid arthritis, and usually starts around age 40¹³. Smoking, jobs that involve vibrating tools and some medicines, including certain beta blockers, migraine drugs and cold remedies, can also bring it on¹³. If you suspect a medicine, ask the prescriber rather than stopping it.

If you have severe Raynaud’s and a finger or toe it affects develops a sore or infection, Mayo Clinic advises getting care right away¹³. Our cold plunge article covers how cold exposure fits in.

The circulation symptom sorter

Use this table to sort a symptom by its common, harmless cause and the serious cause worth ruling out. It’s a guide for deciding how fast to act, not a diagnosis.

What you notice	Common, harmless cause	Possible serious cause	What to do
Fingers or toes turn white or blue in the cold, then recover	Primary Raynaud’s13	Secondary Raynaud’s from another disease, especially if it starts around 4013	Mention it at your next visit; get care right away for a sore or infection on that finger or toe13
Calf, thigh or buttock pain on walking that eases within minutes of rest	Arthritis, back trouble or a strained muscle5	PAD5	Ask about an ABI test and supervised exercise34
Leg pain at rest, foot pain at night, or a sore on the foot that won’t heal	None to assume	Severe PAD that can threaten the limb47	Contact your clinician promptly7
A leg or foot that becomes cool, pale, blue or numb	Sitting in a cold room	Blocked blood flow7	Contact your clinician promptly7
One leg swollen, painful, warm or red	A sprain or skin irritation	Deep vein thrombosis11	See a doctor as soon as possible11
Sudden trouble breathing, chest pain worse with a deep breath, coughing blood, fainting	None to assume	Pulmonary embolism11	Seek medical help immediately11
Bleeding from a varicose vein	None to assume	Vein rupture9	Call 9119
Heavy, achy legs and bulging veins by day’s end, better with feet up	Long hours standing9	Chronic venous insufficiency10	Move often, raise your feet, ask about compression; call sooner for sores or sudden worsening910

Popular circulation remedies, rated

Below, we cover how the best-known options rate on our four-level evidence scale.

Claim	What was tested	Rating
Supervised walking eases PAD leg pain	Top-rated in the 2024 guideline; covered by Medicare14	Strong evidence
Staying smoke-free lowers PAD risk	Smokers have almost three times the PAD risk6	Strong evidence
Ginkgo helps people with PAD walk farther	14 trials; no meaningful gain in walking distance8	Evidence says no, or unsafe
Chelation eases PAD leg pain	Guideline found no benefit4	Evidence says no, or unsafe
Beet juice lowers blood pressure	A few points lower in short trials; one 2024 trial found no change in blood pressure or blood flow1415	Promising but early
Cayenne capsules, dry brushing or detox foot baths improve circulation	We found no trials in people with PAD, vein disease or Raynaud’s in the guideline, Cochrane and federal sources we checked	Not enough evidence

Ginkgo. Ginkgo leaf extract got a fair test. In the 2013 Cochrane review, 11 placebo-controlled trials with 477 people measured how far participants could walk⁸. Ginkgo users walked about 64.5 meters farther, roughly 212 feet by our math, but the gap was too small to rule out chance, and unpublished negative trials probably inflated it⁸. The reviewers found no evidence of a meaningful benefit⁸.

Beet juice. Beets are rich in nitrate, which the body can turn into nitric oxide, a gas that relaxes blood vessels¹⁵. A 2022 review of 7 trials with 218 people with high blood pressure found that nitrate-rich beet juice lowered the top number by about 5 points, in trials lasting 3 to 60 days¹⁴. Measured over 24 hours, the drop was about 2.7 points and not statistically clear¹⁴.

In a small, careful 2024 trial, 15 adults ages 56 to 71 with treated high blood pressure drank beet juice with about 800 milligrams of nitrate a day for four weeks, and nitrate-free beet juice for another four¹⁵. The real juice changed neither their 24-hour blood pressure nor forearm blood flow¹⁵. Beets are a healthy food, but don’t expect them to fix a circulation problem.

Products with no trials behind them. Cayenne capsules, dry brushing and “detox” foot baths are often sold for blood flow, but none of the guideline, Cochrane or federal sources we checked pointed to trials testing them for PAD, vein disease or Raynaud’s. Our articles on vibration plates and on detox products cover what tests of those devices have found.

Walking is the natural treatment, and it works alongside medicine

Many natural-health readers want treatments that work with the body. PAD offers an unusual case where a first-line treatment does just that. Walking, repeated with coaching and rest, has top-grade evidence for easing claudication, and Medicare pays for it¹⁴.

The same habits protect your whole circulation. Not smoking, staying active, and keeping blood pressure, cholesterol and blood sugar in range lower PAD risk, the CDC says³. Our guide to quitting tobacco can help with the first. A later article in this series covers physical activity for heart and metabolic health in depth.

Respecting the body also means heeding its warning signs. A sore that won’t heal, a cold and pale foot, or a swollen, painful leg needs a clinician, not a supplement⁷¹¹.

Questions readers ask

The bottom line

Real circulation problems are common and often quiet. Clogged leg arteries can hide behind “arthritis” or no symptoms at all, and leg clots can be silent until one reaches the lungs. Knowing the warning signs matters more than any product that promises better blood flow.

A coached walking program is a first-line treatment for leg pain from PAD, backed by top-grade evidence, and Medicare has covered it since 2017. Ginkgo didn’t pass its review, beet juice offers small short-term effects, and most circulation gadgets and capsules haven’t been tested. Walk, don’t smoke, keep your numbers in range, and let a clinician check any leg pain, sore or swelling that doesn’t make sense.

Related reading

• Travel wellness starts with the basics, not a suitcase of supplements
• “Additive-free” cigarettes are still cigarettes, and these are the methods that help you quit
• Vibration plates didn’t build bone in a year-long trial, though falls are another story
• Children’s blood lead levels fell 96% without help from any detox product
• A slow pulse can mean fitness, while an irregular one deserves a closer look

Sources

1. Centers for Medicare & Medicaid Services. “National Coverage Determination: Supervised Exercise Therapy (SET) for Symptomatic Peripheral Artery Disease (PAD) (20.35).” Effective May 25, 2017. cms.gov
2. Centers for Medicare & Medicaid Services. “MLN Matters MM10295: Supervised Exercise Therapy for Symptomatic Peripheral Artery Disease.” Medicare Learning Network, 2018.
3. Centers for Disease Control and Prevention. “About Peripheral Arterial Disease (PAD).” Updated May 15, 2024. cdc.gov
4. Barnes GD (key points author), on Gornik HL, Aronow HD, Goodney PP, et al. “2024 ACC/AHA/AACVPR/APMA/ABC/SCAI/SVM/SVN/SVS/SIR/VESS Guideline for the Management of Lower Extremity Peripheral Artery Disease: Key Points.” American College of Cardiology, May 14, 2024. acc.org
5. American Heart Association. “What Are the Symptoms of PAD?” Last reviewed April 21, 2026. heart.org
6. American Heart Association. “Understand Your Risk for Peripheral Artery Disease.” 2026. heart.org
7. MedlinePlus, National Library of Medicine. “Peripheral Artery Disease – Legs.” Reviewed April 28, 2026. medlineplus.gov
8. Nicolaï SPA, Kruidenier LM, Bendermacher BLW, et al. “Ginkgo biloba for Intermittent Claudication.” Cochrane Database of Systematic Reviews, 2013, CD006888. cochrane.org
9. National Heart, Lung, and Blood Institute. “Varicose Veins.” Updated September 26, 2023. nhlbi.nih.gov
10. MedlinePlus, National Library of Medicine. “Venous Insufficiency.” Reviewed June 4, 2026. medlineplus.gov
11. Centers for Disease Control and Prevention. “About Venous Thromboembolism (Blood Clots).” Updated March 5, 2025. cdc.gov
12. Centers for Disease Control and Prevention. “Deep Vein Thrombosis and Pulmonary Embolism.” CDC Yellow Book 2026, April 23, 2025. cdc.gov
13. Mayo Clinic. “Raynaud’s Disease: Symptoms and Causes.” November 16, 2024. mayoclinic.org
14. Benjamim CJR, Porto AA, Valenti VE, et al. “Nitrate Derived From Beetroot Juice Lowers Blood Pressure in Patients With Arterial Hypertension: A Systematic Review and Meta-Analysis.” Frontiers in Nutrition, 2022;9:823039. frontiersin.org
15. Fejes R, Lutnik M, Weisshaar S, et al. “Increased Nitrate Intake From Beetroot Juice Over 4 Weeks Affects Nitrate Metabolism, but Not Vascular Function or Blood Pressure in Older Adults With Hypertension.” Food & Function, 2024. doi.org