Living with neuropathy
What makes neuropathy worse
Some things accelerate the underlying nerve damage. Others only make the symptoms louder tonight. Knowing which is which tells you where your effort is actually worth spending.
Written by the Managing Neuropathy editorial team under the direction of Dr. Tom Biernacki, DPM, FACFAS · Clinical review pending · Last updated 6 September 2026
The short answer. Four things genuinely drive progression: uncontrolled glucose, alcohol, smoking, and an untreated cause such as B12 deficiency or excess B6. Several more make symptoms feel worse without damaging nerves — poor sleep, heat, stress, inactivity. And two things cause sudden real harm in a foot that cannot feel: direct heat, and unnoticed injury.
Things that make the damage progress
Uncontrolled blood glucose
If your neuropathy is diabetic, this is the single largest factor, and nothing else on this page competes with it. Sustained high glucose damages the small blood vessels supplying nerves. Glucose control is the intervention with the strongest evidence for slowing progression — unglamorous, and genuinely the answer.
Alcohol
Alcohol is directly toxic to peripheral nerves and it interferes with the absorption of the B vitamins nerves depend on. Where alcohol is the cause, sustained reduction can produce real improvement. Where it is not the cause, it still adds to the injury.
Smoking
Smoking narrows blood vessels, including the small ones feeding your nerves, and it worsens the circulation problems that make foot wounds slow to heal. It compounds essentially every risk on this page.
A cause nobody has looked for
If your neuropathy is driven by something correctable and it goes uncorrected, it keeps progressing for no good reason. B12 deficiency is the classic example — especially if you take metformin or long-term acid-reducing medication.
And the one people rarely suspect: too much vitamin B6 causes neuropathy. It appears in many “nerve support” supplements at doses well above the safe upper limit, so a product bought to help can be driving the problem. We cover that in detail here.
Certain medications
Some drugs can cause or worsen neuropathy, including several chemotherapy agents and a number of others. This is a conversation with your prescriber, never a reason to stop a medicine on your own — stopping the wrong thing causes more harm than the neuropathy.
Other untreated conditions
Thyroid disease, kidney disease and some autoimmune conditions contribute. Each is manageable once identified.
Things that cause sudden, real harm
Heat
Heating pads, hot water bottles, electric blankets, hot soaks, heated socks, and radiators. A foot that cannot judge temperature cannot tell you it is burning, and burns occur at temperatures that feel mild or feel like nothing. This is among the most common preventable injuries in neuropathy, and it happens to people trying to soothe their symptoms.
Injuries you never felt
Going barefoot, a stone in the shoe, a seam rubbing, a new pair worn too long on the first day, a toenail cut too short. In a foot with intact sensation these are trivial. In a numb foot they can become an ulcer before anyone notices. This is why the daily foot check matters more than any product.
Footwear that is quietly wrong
Too tight, too shallow, seams inside, a sole that folds. The feedback that would normally make you take the shoe off is missing. Our footwear guide covers what to check by hand instead of by feel.
Cold, in the other direction
Numb feet are also poor at reporting cold, and reduced circulation makes cold injury more likely. Warm socks yes; direct heat no.
Things that make symptoms louder without causing damage
These are worth managing, because quality of life matters — but they are not accelerating the disease.
| Factor | What is going on |
|---|---|
| Night-time | Nerve pain is famously worse in the evening and at night. There is less to distract you, and you are lying still attending to it. This is normal, not deterioration. |
| Poor sleep | Pain disturbs sleep and poor sleep lowers pain tolerance, which is a genuine loop worth breaking. It is a reasonable thing to raise with a clinician. |
| Stress and low mood | Both amplify pain perception. Living with a chronic condition understandably produces both. |
| Inactivity | Deconditioning worsens balance, stiffness and glucose control. Movement has real evidence behind it for symptoms and quality of life. |
| Weather and temperature swings | Many people notice symptoms shift with the weather. Uncomfortable; not damaging. |
| Standing all day | Prolonged load increases discomfort and swelling. Worth adjusting; not progression. |
The distinction that matters
People often assume a bad evening means their neuropathy has advanced. Usually it has not. Symptoms fluctuate substantially day to day for reasons that have nothing to do with nerve fiber loss, which happens slowly over months and years.
What genuinely signals change is a shift in the pattern: numbness spreading noticeably further up the foot, new weakness, or a new asymmetry between the two sides. That is worth an appointment. A rough week is not.
This also explains why so many products appear to work. Start something during a bad patch, feel better during the good patch that follows, and the product gets the credit. We unpack that here.
Where to put your effort
Nothing else comes close for slowing progression.
Ask about B12 specifically, and bring every supplement bottle so the B6 content can be checked.
Both act directly on the nerves and on the circulation feeding them.
The single easiest serious injury to avoid.
Prevents the complications that actually cause harm.
Ask about physical therapy if balance is affected, rather than improvising.
See someone promptly for
Any open sore, blister or crack that is not healing; redness, warmth, swelling or drainage; any wound at all if you have diabetes; numbness spreading noticeably; new weakness, especially difficulty lifting the front of the foot; or a foot that has changed shape and become warm and swollen without an injury.
Related reading
Numb toes: reading the pattern · What actually helps · Supplements, honestly assessed · Creams for nerve pain · Foot massagers and the heat warning
Sources and further reading: American Diabetes Association Standards of Care, neuropathy section, including glycaemic control to slow progression and B12 monitoring with metformin. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), foot-care guidance including avoiding heat and soaking. National Institutes of Health Office of Dietary Supplements, vitamin B6 tolerable upper intake level.
This page is general education and is not a diagnosis, a treatment plan, or advice to start or stop any medicine. Clinical review by Dr. Biernacki is pending; the review date will be shown here once complete.
For our Michigan neighbors
Has the pattern
actually changed?
Spreading numbness or new weakness is worth an examination rather than a wait. Dr. Biernacki’s Michigan practice can measure it.
Everywhere else, take this list to your own clinician.
Dr. Tom Biernacki, DPM, FACFAS is a double board-certified foot and ankle surgeon (ABFAS and ABPM) and a Fellow of the American College of Foot & Ankle Surgeons. He is the founder of Balance Foot & Ankle in Howell and Bloomfield Township, Michigan, where peripheral neuropathy, diabetic foot risk and loss of protective sensation are part of his weekly clinic. His patient education videos have drawn more than 950,000 subscribers on YouTube. He writes Managing Neuropathy to put the explanation he gives in the exam room in front of the people who cannot get to one — including when a product is worth buying and when it is not.