You were right to keep looking.
You're not imagining it. The workup just hasn't gone far enough yet.
Everything checked out. But you still don't feel like yourself.
- You have tingling, numbness, or reduced sensation that hasn't been fully explained
- Your B12 has been supplemented but levels remain unstable or symptoms persist
- You experience mental fatigue and cognitive slowing that doesn't lift with rest
- Your serum B12 is in range but you still feel depleted
- Your workup has never investigated H. pylori as a contributor to your B12 status
- You want to understand the absorption mechanism before your next appointment
- Tingling or numbness in hands, feet, or limbs
- B12 supplements that don't hold the number stable
- Serum B12 "in range" but the more sensitive markers come back off
- Mental fatigue that arrives early and doesn't lift through the day
- Slower thinking and shakier working memory
- Ferritin below 50 ng/mL waved through as "normal"
- Cognitive slowness that feels physical rather than mental
- Low mood or flat motivation that standard fixes don't shift
- Symptoms that track with how run-down you feel overall
- Sleep that doesn't restore, no matter how long
- Low, persistent mood that feels physical rather than emotional
- Gut symptoms alongside the nerve or cognitive ones
A workup for the B12 problem that won't resolve.
This guide is written for the person whose nerve symptoms, mental fog, or low energy persist despite B12 supplements — or whose tests keep coming back unexplained. It maps four ways an unsuspected H. pylori infection has been linked to the B12, iron, and inflammation your nervous system depends on, and gives a clear plan for what to test next.
It is not a treatment protocol. It's the investigation itself, written down — so your next move is far more specific than your last, whether you take it to a doctor or pursue it on your own.
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i.
The clinical signature of nerve and B12 symptoms that won't resolveHow the picture differs from plain dietary shortfall and other nerve conditions — and the questions that tell them apart.
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ii.
Four pathways the nerve workup rarely checksLow absorbable B12, low iron, brain-reaching inflammation, and the gut-brain line — with the evidence tier for each, honestly graded.
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iii.
Why 'normal' serum B12 isn't the same as 'fine'What a result "within normal limits" can still hide when the real problem is absorption — and the sharper markers worth asking for.
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iv.
Labs to request beyond a basic panelA short list of secondary markers — MMA, homocysteine, ferritin, hs-CRP, vitamin D — and what each adds before and after testing.
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v.
Testing options for H. pyloriStool antigen, urea breath test, biopsy — trade-offs, costs, and what each rules in or out.
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vi.
What positivity changesThe clinical decisions that follow a positive result — eradication, re-testing, follow-up marker scoring, timeline.
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vii.
A script for raising itA practical framework for discussing testing, interpretation, and next steps — whether with your physician or as a self-directed investigation.
Sharper thinking. Clearer next steps.
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Understand why B12 supplements may not have helped — when the problem is absorption, not how much you take.
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Tell the difference between 'normal' B12 and 'fine for you' — and which sharper markers (MMA, homocysteine) to ask for.
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Walk away with a specific plan to act on — with a doctor or on your own — including a baseline to track before and after.
Three tiers. One rubric. No exceptions.
Every claim is tagged Strong, Moderate, or Exploratory — so you can see exactly how solid each one is. The nerve link runs mostly through B12 and iron; here's the honest picture.
Nerve & energy / B12 · evidence summary
A few honest questions.
Is this medical advice?
No. This guide is educational — written to help you understand the evidence, evaluate testing options, and identify questions worth exploring with your healthcare team or on your own.
Why isn't my neurologist already testing for this?
Neurologists focus on the brain and nervous system, and H. pylori is classified as a gastroenterological infection — so the connection sits in the gap between specialties rather than in either one's routine workup. It's not a failing on your part. The guide gives you the mechanism and exactly what to ask for — whether you raise it with a doctor or decide to pursue it yourself.
Do I need to buy the testing kit?
No — the guide is sold separately from any test or product. It covers all three testing options — stool antigen, urea breath test, biopsy — what each costs, and how to ask for it. But a test only tells you yes or no; the guide is what tells you which test to request and what to do with the result, which is where most people get stuck.
What if my labs are 'in range'?
The guide spends a section on this exact situation — what 'in range' obscures, what to look at in combination, and the secondary markers that frequently shift the picture without changing the headline numbers.
Refund policy?
14 days, no questions. If the guide isn't useful, the Lemon Squeezy receipt has a one-click refund link.
Who wrote it?
Researched, written, and medically reviewed by a physician on the Welyon team. Every claim is drawn from peer-reviewed literature and graded inline — Strong, Moderate, or Exploratory — so you can weigh the evidence behind each one yourself.
Start closing the gap between 'normal' and 'explained.'
Move from ruled out to figured out.
40 pages, twenty-two citations, four pathways, one clearer next step.
Many readers find more than one guide applies. Each is sold separately — or ask about bundle pricing at checkout.