B12 Insight
Low B12 is not just anaemia. It may also be part of your cardiovascular risk.
We read the research on vitamin B12, homocysteine and heart risk — then turn it into a three-minute check you can actually act on. Free band, one-time paid report.
Free risk band. Full report is $9 once — no subscription.
Your risk profile
SampleElevated likelihood of low B12
Plant-only diet
Long-term PPI use
Age 60+
An evidence review, then your own numbers
Independent reading of the literature, and a report that tells you which tests to ask your doctor for.
The review, in plain language
What B12 does, why homocysteine matters for blood vessels, and how strong the cardiovascular link really is — including the trials that came up empty.
Mechanism, not mysticism
Every risk factor maps to a physiological step: stomach acid, intrinsic factor, the terminal ileum, or the methionine synthase reaction.
Seven-question risk check
Diet, medication, absorption, age, symptoms and prior labs — weighted the way the epidemiology weights them.
Free band, paid detail
Your score and band cost nothing. The analysis, the lab list and the eight-week plan unlock with one report credit.
Download and keep it
Every unlocked report exports as a clean document you can print, save, or bring to an appointment.
Re-check over time
Take the check again after testing or treatment, and keep the reports side by side.
How it works
Three steps. You can see your band before creating an account.
Answer seven questions
About three minutes: diet, medication, digestion, age, symptoms and any previous B12 result.
See your band for free
A 0–100 risk score and what it means, at no cost. The detailed analysis stays behind the paywall.
Unlock the full report
One credit reveals the factor-by-factor analysis, the tests to request, the eight-week plan and a downloadable copy.
Pay per report, not per month
The check and your risk band are free, every time. Only the detailed report costs money — and only when you want it.
Single report
One full report for one assessment
- The full nine-section report
- Every risk factor, weighted and explained
- Eight-week action plan
- Downloadable copy to keep
Three reports
Re-test after treatment, or check a family member
- Three report credits
- Re-test after treatment
- Spend one on a family member
- Credits never expire
No subscription and no auto-renewal. Prices in USD; Alipay and WeChat Pay settle in CNY.
Questions
What this site does — and what it deliberately does not do.
Notes from the literature
Shorter pieces on B12 testing, homocysteine and what the trials actually showed.
Which B12 test actually tells you something
Serum B12 is the test everyone orders and the one that misses the most cases. Here is why methylmalonic acid is the better follow-up — and when homocysteine helps.
The homocysteine trials nobody quotes
B vitamins lower homocysteine. They have not reliably prevented heart attacks. Both facts belong in the same paragraph — here is what the big trials actually found.
Find out where you actually stand
Seven questions, three minutes, a real risk band — free. Pay once only if you want the full analysis.
Educational use only. Not a diagnosis.