Heel spurs form when repeated stress on the heel bone triggers calcium deposits to build up over time. The good news: they’re largely preventable with the right combination of stretching, footwear choices, and load management. Even if you already have early symptoms, more than 90 percent of people improve with nonsurgical approaches alone.
How Heel Spurs Form
A thick band of tissue called the plantar fascia runs along the bottom of your foot, connecting your heel bone to your toes. Every time you step, this tissue absorbs force. When that force becomes excessive or repetitive, the fascia pulls on the spot where it attaches to the heel bone. Over months or years of this constant tugging, your body responds by laying down calcium deposits at the attachment site. That bony growth is a heel spur.
This means heel spurs don’t appear suddenly. They’re the end result of long-standing tension that went unaddressed. Prevention is about reducing that tension before your body starts building bone where it shouldn’t.
Who Is Most at Risk
Heel spurs are more common in women than in men, and body weight plays a significant role. In one study, people with heel pain had an average BMI of 30.4, compared to 28.2 for those without pain. Researchers suggest that maintaining a BMI at or below 25, which is also the general target for cardiovascular health, is a reasonable goal that may reduce heel pain risk. Every extra pound increases the load your plantar fascia absorbs with each step, accelerating the cycle that leads to spur formation.
Beyond weight, certain activities and foot types increase your risk. Runners and people who spend long hours standing on hard surfaces put more repetitive stress on the fascia. Flat feet and very high arches both change how force distributes across the bottom of the foot, concentrating more strain at the heel attachment point. Tight calf muscles are another major contributor because they limit ankle flexibility and force the plantar fascia to work harder during walking.
Daily Stretching That Protects the Fascia
Keeping your calves and plantar fascia flexible is one of the most effective things you can do. Tight calves restrict how far your ankle can bend, which transfers more stress directly to the fascia. A consistent stretching routine counteracts this.
For your calves, stand facing a wall with one foot behind you, heel flat on the ground. Lean forward until you feel a stretch in the back of your lower leg. Hold for 20 to 30 seconds, then switch sides. Repeat two to three times per leg. For the plantar fascia itself, sit down, cross one foot over the opposite knee, and gently pull your toes back toward your shin. Hold for 30 seconds, three times per foot.
A simple massage also helps. Roll a tennis ball or frozen water bottle under the arch of your foot for about 10 seconds at a time, repeating 10 times. This is especially useful first thing in the morning or after sitting for long periods, when the fascia is tightest. Doing these stretches and massages two to three times a day takes less than 10 minutes total and makes a meaningful difference in tissue flexibility over weeks.
Strengthening the small muscles of your feet also helps distribute force more evenly. Toe towel scrunches are a good starting point: place a towel on the floor and use your toes to scrunch it toward you, repeating 10 times per foot.
Choosing the Right Footwear
Shoes with adequate arch support and heel cushioning reduce the strain on your plantar fascia with every step. This doesn’t mean you need expensive custom orthotics. A Harvard Health analysis of 20 randomized controlled studies covering about 1,800 people found no difference in short-term pain relief between custom-made orthotics and store-bought versions. A well-fitting, supportive insole from a pharmacy or shoe store can be just as effective.
What matters more than the brand is the condition of your shoes. The midsole, which provides most of the cushioning, breaks down with use. The American Academy of Podiatric Sports Medicine recommends replacing running or walking shoes after 300 to 500 miles, or after 45 to 60 hours of court sports like basketball or tennis. Even if you don’t track mileage, replace athletic shoes that are over a year old. Worn-out cushioning forces your heel to absorb impact that the shoe should be handling.
Avoid walking barefoot on hard surfaces like tile or concrete, particularly if you have flat feet or spend long hours on your feet. Flip-flops and completely flat shoes offer almost no arch support and let the fascia stretch unsupported with each step.
Managing Body Weight
Your feet bear your full body weight thousands of times a day. Running multiplies the force on each heel to roughly two to three times your body weight per stride. Even modest weight loss reduces this cumulative load significantly. Research consistently identifies elevated BMI as one of the strongest risk factors for heel pain in non-athletic populations, alongside the presence of existing calcaneal spurs. If you’re above a BMI of 25, bringing your weight down is one of the highest-impact preventive steps available to you.
Activity Modifications That Lower Risk
If you run or do high-impact exercise, how you increase your training volume matters. Sudden jumps in mileage or intensity are a common trigger for plantar fascia problems. A general guideline is to increase weekly distance or duration by no more than 10 percent at a time, giving the fascia time to adapt to greater loads.
Cross-training with lower-impact activities like swimming or cycling gives your feet recovery time while maintaining fitness. If your job keeps you standing on hard floors for hours, cushioned mats, supportive shoes, and periodic sitting breaks all reduce the cumulative stress on your heels throughout the day.
Recognizing Early Warning Signs
Heel spurs develop gradually, and the earlier you respond to symptoms, the easier they are to manage. The hallmark sign is a sharp pain on the bottom of the heel, particularly with your first steps in the morning or after sitting for a long time. This pain often improves after a few minutes of walking as the tissue warms up, then returns after prolonged activity.
If you notice this pattern, don’t wait for it to worsen. Start the stretching routine described above, check that your shoes aren’t worn out, and consider adding an over-the-counter arch support insole. Reducing high-impact activity temporarily while the irritation calms down can prevent weeks of pain from becoming the months of chronic tension that lead to spur formation. More than 90 percent of people with heel pain resolve it without surgery using these kinds of conservative steps.