Can Vitamin B12 Deficiency Cause Tinnitus? What the Research Shows

If you live with tinnitus, that constant ringing, buzzing, or hissing in your ears, you know how exhausting it is.

Doctors often say "you just have to live with it" or offer hearing aids and sound therapy. But for some people, the noise may not be caused by loud music exposure or age-related hearing loss.

It may be connected to a nutrient deficiency that is starving the nerves in your [Nervous System →].

Here is the connection between vitamin B12, nerve health, and tinnitus, what the evidence actually supports, and where it falls short.

Think of your auditory nerve like an electrical wire. It is covered in a protective coating called the myelin sheath. This insulation ensures that electrical signals travel smoothly from your inner ear to your brain.

Vitamin B12 is essential for building and maintaining myelin. When B12 levels drop too low, the myelin sheath can begin to degrade, a process called demyelination.

When insulation breaks down:

• Signals become erratic and poorly conducted

• The nerve becomes hypersensitive

• Random electrical impulses may fire without any external sound

• Your brain interprets this neural noise as ringing, buzzing, or hissing

This is not unique to the auditory nerve. B12 deficiency causes neurological symptoms throughout the body, including tingling in hands and feet, numbness, balance problems, and cognitive changes.

An important distinction: this mechanism is biologically plausible and well-established for peripheral nerves generally. However, researchers have not directly confirmed through imaging or biopsy that tinnitus specifically results from auditory nerve demyelination in B12-deficient patients. The connection is supported by correlation and biological reasoning, not by direct mechanistic proof in humans. Keep this in mind as we look at the studies.

A study published in the American Journal of Otolaryngology (Singh et al., 2016) found that 47% of tinnitus patients tested were deficient in vitamin B12, compared to a lower rate in the control group. After B12 supplementation, some deficient patients reported reduction in tinnitus loudness.

A pilot study in the International Tinnitus Journal (Berkiten et al., 2013) showed measurable improvement in tinnitus symptoms following B12 supplementation in patients with documented deficiency.

These studies show that B12 deficiency is more common in people with tinnitus than expected, and that correcting it sometimes helps. That is genuinely useful information.

But there are real limitations:

• Both studies were small

• Tinnitus improvement was not universal, even among deficient patients

• Neither study was a large randomized controlled trial

• Tinnitus has many potential causes: noise damage, age-related hearing loss, medication side effects, jaw problems, cardiovascular issues, and neurological conditions

B12 deficiency is one possible contributor, not the whole picture.

The practical takeaway: if you have tinnitus, getting your B12 levels tested is a simple, low-cost step that could identify a treatable factor. If you are deficient, correcting it may help. If your levels are already adequate, adding more B12 is unlikely to make a difference.

Even if you eat meat, eggs, and dairy regularly, you may still be low. Several factors work against you.

Stomach acid declines with age. B12 absorption from food requires adequate stomach acid. After age 50, many people produce significantly less, making dietary B12 harder to absorb.

Medications interfere. Proton pump inhibitors (omeprazole, lansoprazole), metformin, and long-term antacid use all reduce B12 absorption substantially. If you have been on any of these for years, your B12 levels deserve a check.

Vegetarians and vegans are at high risk. B12 is found almost exclusively in animal products.

Gut conditions matter. Celiac disease, Crohn's disease, or any condition affecting the small intestine can impair absorption regardless of what you eat.

• Standard supplementation: 1,000 mcg daily

• Form: methylcobalamin is the active form and does not require conversion by your body. Cyanocobalamin (the most common supplement form) works fine for most people but requires an extra conversion step

• Delivery: sublingual tablets (dissolved under the tongue) bypass the gut, which can be helpful for people with absorption issues from low stomach acid or gut conditions

• Testing: ask your doctor for a serum B12 test. Standard lab ranges often list anything above 200 pg/mL as "normal," but some researchers and clinicians consider levels below 400 pg/mL to be suboptimal for neurological function. Discuss your results with your doctor rather than interpreting the number on your own

While B12 addresses nerve insulation, ginkgo biloba has been studied for a different angle: blood flow to the inner ear.

Your cochlea contains microscopic hair cells that convert sound vibrations into electrical signals. These cells are extremely sensitive to oxygen deprivation, and the blood vessels supplying them are among the smallest in your body.

Ginkgo biloba is a vasodilator that improves microcirculation. The theory is that better blood flow to the inner ear could support those fragile hair cells.

The Cochrane Database of Systematic Reviews (Hilton et al., 2013) examined the available studies and concluded that the evidence does not support ginkgo biloba as an effective treatment for tinnitus when the condition is the primary complaint.

Some individual studies showed modest benefit, particularly in patients with tinnitus related to poor cerebrovascular circulation. But the overall body of evidence is weak.

Honest assessment: if your tinnitus is potentially related to circulation issues, ginkgo might be worth discussing with your doctor as a low-risk trial of 8 to 12 weeks. But the evidence does not support recommending it broadly for tinnitus.

If you do try it:

• Dose used in studies: 120 to 240 mg daily of standardized extract

• Important: ginkgo has blood-thinning properties. Do not take it if you are on anticoagulants or scheduled for surgery without consulting your doctor first

If you are looking for B12 or hearing support supplements with verified dosing and third-party testing, we have reviewed several options.

[See Our Top-Rated B12 Products →]

1. Check your medications. Several common drugs are ototoxic (toxic to the inner ear): high-dose aspirin, certain antibiotics (gentamicin, streptomycin), loop diuretics, and some chemotherapy drugs. If your tinnitus started or worsened after beginning a new medication, ask your doctor whether it could be a factor.

2. Try pink noise at night. Tinnitus is often loudest in silence, which is why it wrecks sleep. Pink noise (rain sounds, ocean waves) has deeper, more natural frequencies than white noise and masks the ringing more effectively. Many free apps offer pink noise designed for tinnitus management.

3. Manage stress. Stress does not cause tinnitus directly, but it heightens your nervous system's sensitivity to the signal, making it feel louder and more intrusive. Magnesium supplementation may help with both vascular relaxation and noise sensitivity. We cover magnesium's benefits in our [blood pressure and magnesium guide →].

4. Protect what you have. If you already have tinnitus, preventing further damage is critical. Use earplugs at concerts and when using power tools. Keep headphone volume below 60% of maximum. Limit headphone sessions to 60 minutes at a time.

Tinnitus is usually not dangerous, but certain patterns need medical attention:

• Tinnitus in one ear only (may indicate acoustic neuroma or other structural issues)

• Pulsatile tinnitus, hearing your heartbeat in your ear (may indicate vascular problems)

• Sudden hearing loss alongside tinnitus (medical emergency requiring immediate treatment)

• Tinnitus with dizziness or vertigo (may indicate Meniere's disease)

• Progressively worsening tinnitus despite intervention

An audiologist can perform hearing tests and tinnitus matching to characterize your specific type, which helps determine the most appropriate treatment.

• B12 and nerve health: vitamin B12 maintains the myelin insulation on nerves, including the auditory nerve. Deficiency is plausibly linked to tinnitus, though the exact mechanism has not been confirmed in humans

• 47% of tinnitus patients in one study were B12 deficient, and some improved with supplementation. But both key studies were small, and B12 correction does not help everyone

• Test before you supplement: a simple blood test can identify whether B12 deficiency is a factor for you. If your levels are already adequate, more B12 is unlikely to help

• Methylcobalamin sublingual is a good option, especially for people over 50 or on PPIs, though cyanocobalamin also works for most people

• Ginkgo biloba evidence is weak: the Cochrane review does not support it as a reliable tinnitus treatment, though it may have a role in circulation-related cases

• Check your medications: ototoxic drugs are an underrecognized contributor to tinnitus

• One-sided or pulsatile tinnitus requires prompt medical evaluation

B12 deficiency is an underappreciated and easily testable potential contributor to tinnitus. It is not a guaranteed cure, and most tinnitus has multiple contributing factors. But given that the test is simple, the deficiency is common, and correction is low-risk, it is one of the most reasonable first steps you can take. Get tested, address any deficiency, protect your hearing from further damage, and see a specialist if your symptoms are one-sided, pulsatile, or worsening.