Peripheral neuropathy has dozens of causes, but the most common ones are preventable or manageable with specific lifestyle changes. Keeping blood sugar in a healthy range, avoiding nerve-toxic substances, staying physically active, and correcting nutritional gaps can dramatically lower your risk. Here’s what actually works, broken down by the major risk factors.
Keep Blood Sugar Under Control
Diabetes is the single most common cause of peripheral neuropathy, and the damage is closely tied to how high your blood sugar runs over time. Maintaining an HbA1c below 7% (roughly a 154 mg/dL average) is the clearest target for protecting your nerves. One large study of people with type 2 diabetes found that sustaining an A1c above 7% for three years or more significantly increased the risk of developing neuropathy.
If you’re prediabetic, the window for prevention is even wider. Losing 5 to 7 percent of your body weight and getting regular physical activity can delay or prevent type 2 diabetes entirely, which means the nerve damage never starts. If you already have diabetes, tight glucose management doesn’t just slow nerve damage. It can prevent it from progressing to the point where you lose feeling in your feet or develop chronic pain.
Fill Nutritional Gaps, Especially B Vitamins
Your nerves depend on a steady supply of certain vitamins to function and repair themselves. Vitamin B12 is the most important one. A serum B12 level below 200 pg/mL raises a red flag, and levels below 150 pg/mL are considered outright deficient. The recommended daily intake for most adults is 2.4 mcg, which is easy to get from meat, fish, eggs, and dairy. Vegans, older adults, and people taking acid-suppressing medications are at the highest risk of falling short.
Thiamine (vitamin B1) is another critical nerve nutrient. Heavy alcohol use depletes thiamine by suppressing appetite and blocking absorption, which is one of the main ways alcohol damages nerves. If you drink regularly, a B-complex supplement can help fill the gap, though cutting back on alcohol is far more effective.
Interestingly, too much of one B vitamin can also cause neuropathy. Excess vitamin B6 (pyridoxine), often taken as a supplement for energy or mood, is directly toxic to nerves at high doses. Stick to the recommended amount unless a doctor has specifically advised otherwise.
Limit Alcohol Intake
Alcohol damages peripheral nerves through two separate mechanisms. First, it’s directly toxic to nerve cells with chronic, heavy use. Second, it depletes thiamine and other nutrients your nerves need to function, essentially starving them while poisoning them at the same time. The result is numbness, tingling, and burning pain that typically starts in the feet and hands.
There’s no sharply defined “safe” threshold for alcohol and nerve health. Small amounts in moderation are generally tolerable, but long-term heavy drinking is one of the most common preventable causes of neuropathy after diabetes. If you already have early symptoms like tingling in your extremities, stopping alcohol entirely gives your nerves the best chance of recovery.
Know Which Medications Carry Risk
A surprisingly long list of prescription medications can cause neuropathy as a side effect. The categories include:
- Chemotherapy drugs like cisplatin, paclitaxel, and docetaxel
- Certain antibiotics and antivirals including metronidazole, nitrofurantoin, and several HIV medications
- Heart and blood pressure medications such as amiodarone and hydralazine
- Seizure medications including phenytoin and carbamazepine
- Autoimmune treatments like etanercept, infliximab, and leflunomide
- Other drugs including colchicine (used for gout) and isoniazid (used for tuberculosis)
If you’re taking any of these, your doctor should be monitoring you for early signs of nerve damage, such as new numbness or tingling. The goal is to catch symptoms before the nerve damage becomes permanent. Don’t stop a medication on your own, but do report any new sensations in your hands or feet promptly. Often the dose can be adjusted, or an alternative drug can be used.
Stay Physically Active
Regular exercise improves blood flow to the tiny vessels that feed your peripheral nerves, and poor circulation in those vessels is a major contributor to nerve degeneration. Aim for 150 minutes of moderate-intensity exercise per week, or 75 minutes of vigorous exercise. Walking, cycling, and swimming all count. Add strength-building exercises at least two days per week, with 48 to 72 hours of recovery between resistance sessions.
Exercise also helps with blood sugar regulation, weight management, and inflammation, all of which reduce neuropathy risk through separate pathways. For people who already have mild neuropathy, consistent exercise has been shown to reduce symptoms and improve balance. It’s one of the few interventions that addresses multiple causes at once.
Protect Against Compression and Repetitive Strain
Not all neuropathy comes from inside the body. Prolonged pressure on a nerve, whether from posture, repetitive motion, or poorly designed workstations, can cause localized nerve damage. Carpal tunnel syndrome is the most familiar example, but compression neuropathies can affect nerves at the elbow, knee, and ankle too.
A few ergonomic principles go a long way. Keep your wrists within about 15 degrees of neutral in any direction while typing or using tools. Position your elbows at roughly 100 degrees with your upper arms close to your body. Avoid prolonged gripping, pinching, or twisting motions. If you work at a desk, use an adjustable keyboard tray and keep your feet flat on the floor.
The single most effective habit is taking breaks from any sustained posture every 20 to 30 minutes. Stand up, stretch, shake out your hands. Repetitive strain neuropathies develop slowly over months and years, so prevention is about consistent small adjustments rather than one dramatic change.
Get Vaccinated Against Shingles
Shingles can leave behind a painful neuropathy called postherpetic neuralgia, where damaged nerves keep firing pain signals for months or even years after the rash clears. The Shingrix vaccine is over 90% effective at preventing both shingles and postherpetic neuralgia in adults 50 and older with healthy immune systems. Even in adults 70 and older, effectiveness against nerve pain remains at 89%.
If you’re 50 or older, this is one of the most straightforward ways to prevent a specific type of neuropathy. The vaccine is given as two doses, two to six months apart.
Eat to Reduce Inflammation
Chronic systemic inflammation contributes to nerve degeneration, and your diet is one of the most direct ways to influence it. Certain plant compounds called polyphenols have demonstrated anti-inflammatory and neuroprotective effects in research on nerve health. Naringenin, found in citrus fruits, tomatoes, and herbal teas, acts as an antioxidant that helps protect nerve cells from damage. Hesperidin, another citrus compound, reduces inflammation by dialing down the chemical signals that drive it. Flavonols, found in apples, onions, broccoli, lettuce, and tea, support nerve regeneration.
You don’t need to memorize individual compounds. The practical takeaway is that a diet rich in fruits, vegetables, whole grains, and healthy fats provides the raw materials your nerves need to stay healthy and repair minor damage before it accumulates. A diet heavy in processed foods, added sugar, and refined carbohydrates does the opposite, driving both inflammation and blood sugar spikes that compound nerve risk over time.
Protecting Nerves During Chemotherapy
Chemotherapy-induced peripheral neuropathy is one of the hardest forms to prevent because the drugs that damage nerves are often the same ones fighting the cancer. Cryotherapy, which involves applying ice or cold packs to the hands and feet during infusion, has shown a likely benefit for preventing sensory neuropathy in a meta-analysis of nine studies. The American Society for Clinical Oncology included cryotherapy in its 2020 guidelines, though it describes the practice as “promising” rather than firmly established.
The approach is low-cost (ice bags during treatment) and low-risk, with frostbite and cold intolerance being the main concerns. No devices have received regulatory approval specifically for preventing chemotherapy-related neuropathy, but the simplicity and safety of ice bags make them a reasonable option to discuss with your oncology team, particularly during taxane-based chemotherapy.