Ranked only against the same measurement, in the same unit. See the positive, neutral, opposite-direction and still-collecting evidence before deciding what is worth your own test.
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 limitsFor APOE4 carriers, Phoenix has published positive evidence for B-complex and Vitamin B12 against Vitamin B12 level. Member #6FAEFA's Vitamin B12 level moved from 680 to 1539 pg/mL in 70 days. The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published.
Phoenix has measured 2 interventions against Vitamin B12 level: 2 positive. See the table below.
| Intervention | What we observed | Evidence status |
|---|---|---|
| B-complex | Member #6FAEFA's Vitamin B12 level moved from 680 to 1539 pg/mL in 70 days. | Positive individual result |
| Vitamin B12 | The support cohort has 76 B12-family users and 15 with a repeat vitamin B12 level; clean eligibility is not published. | Positive individual result |
Search by health goal or intervention to see what changed for real members, including results that moved the wrong way.
Nutrient status · Improve vitamin B12 status · 2 interventions shown.
Vitamin B12 level: Increase 859 pg/mL
Cases: 1
Member #6FAEFA's Vitamin B12 level moved from 680 to 1539 pg/mL in 70 days.
B-complex
✓Positive individual resultMember #6FAEFA's Vitamin B12 level moved from 680 to 1539 pg/mL in 70 days.
Vitamin B12 level
Before680After1539pg/mL+126.3%
70 days between measurements
Full stack credited: B Complex (lead), Vitamin B12 (co).
What else changed: no nearby starts were recorded.
Next study: repeat Vitamin B12 level after a dated B-complex 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.
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