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Phoenix APOE4 Research · Reviewed by Kevin Tran, APOE4/4 carrier and founder · Data through 2026-08-23 · How to read this research
How to read this
Observational research: real APOE4 carriers tracked over time, each compared with their own earlier self. Members chose their interventions, with no randomisation or placebo group. Everything else they changed is shown beside each result.
Read the full methods and limitsPhoenix has measured Vitamin B12 against 2 exact outcomes for APOE4 carriers. The support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published. The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published.
| Outcome | Direction | What we observed |
|---|---|---|
| Homocysteine | Repeated positive | The support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published. |
| Vitamin B12 level | Positive individual result | The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published. |
Phoenix has measured Vitamin B12 against 2 exact outcomes for APOE4 carriers. The support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published. The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published.
The support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published. Support: 78 logged members, 21 members with repeats, 2 observations, 42 measurements.
The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published. Support: 77 logged members, 16 members with repeats, 1 observations, 32 measurements.
Search by health goal or intervention to see what changed for real members, including results that moved the wrong way.
Vitamin B12 · 2 outcomes shown.
Homocysteine: Status Not enough data
The support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published.
Vitamin B12
✓Repeated positiveThe support cohort has 76 B12-family users and 19 with a repeat homocysteine result; clean eligibility is not published.
Homocysteine
Before12.0After11.1µmol/L-7.5%
89 days between measurements
Full stack credited: Vitamin B12 (lead), Magnesium threonate (co), Folate (undated), TMG (undated).
What else changed: no nearby starts were recorded.
Next study: repeat Homocysteine after a dated Vitamin B12 window.
Homocysteine
Before14.6After11.7µmol/L-19.9%
44 days between measurements
Full stack credited: Vitamin B12 (lead), Magnesium Glycinate (co).
What else changed: no nearby starts were recorded.
Next study: repeat Homocysteine after a dated Vitamin B12 window.
Vitamin B12 level: Status Not enough data
The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published.
Vitamin B12
✓Positive individual resultThe support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published.
Vitamin B12 level
Before598After852pg/mL+42.5%
889 days between measurements
What else changed: no nearby starts were recorded.
Next study: repeat Vitamin B12 level after a dated Vitamin B12 window.
The 43-page study: what members tried, how their bloodwork and wearable results changed, and what else changed alongside them.
Turn evidence into your next test
476 members have already tried, measured and logged. Join Phoenix and your next blood draw joins the same Navigator you are reading.
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Choose an outcome, like LDL cholesterol or sleep, or an intervention, like training: both paths open the same measured records.