Browse by exact outcome

Total sleep duration: every measured intervention

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.

Research issue
Issue 01
Data through
2026-08-09
Evidence map version
v1.1.0
Explore the evidence Get the Evidence Map

How to read this

Phoenix research is longitudinal and observational: we follow real APOE4 carriers over time and compare each member with their own earlier self, with no placebo group, no randomisation, and members choosing their own interventions.

That means these are strong signals pointing at what to test next, not proof of cause. Most nutrition, supplement and lifestyle research you read online has exactly the same design. The difference is that we say so, and we show you the confounders.

Read the full methods and limits

What the Phoenix community is measuring

Browse exact outcomes and interventions. Each result keeps its source, measurement rule and audit record beside the claim.

Get the PDFJoin Phoenix in 7 minutes Open inside Phoenix

Sleep

Keep total duration, sleep stages and subjective sleep ratings separate.

Most promising

Total sleep duration

Verified wearable total sleep duration · Aim: higher

Earlier bedtime

✓Repeated positive

Two analyses found earlier nights about 30 minutes longer: 56 of 68 eligible members under one rule and 59 of 66 eligible members under a stricter rule. No blended response rate is published.

Selected member cases

  1. Deep Diver · APOE4/4 · female · age not disclosed

    Earlier nights were 74 to 80 minutes longer across 53 nights of wearable data.

    What else changed: no nearby starts were recorded.

    Next study: repeat Total sleep duration after a dated Earlier bedtime window.

  2. Night Shift · APOE3/4 · female · age 50-59

    Earlier nights were 77 to 120 minutes longer across two independent recomputations.

    What else changed: no nearby starts were recorded.

    Next study: repeat Total sleep duration after a dated Earlier bedtime window.

  3. Omega Lifter · APOE4/4 · male · age 40-49

    Earlier nights were 73 to 93 minutes longer across two independent recomputations.

    What else changed: no nearby starts were recorded.

    Next study: repeat Total sleep duration after a dated Earlier bedtime window.

3 selected member cases · not a response rate

Observations
3
Nights
53
Sources and context

Members eligible under each named within-member median-bedtime analysis; the two cohorts remain separate.

  • report-lines-343-412, reviewed by independent verifier

3 selected cases shown with this evidence.

ZenoWell taVNS

✓Positive individual result

The Signal Seeker averaged 522 total sleep minutes on use nights versus 494 on comparison nights across 77 nights.

Selected member cases

  1. Signal Seeker · APOE3/4 · female · age 50-59

    Use nights averaged 522 total sleep minutes versus 494 on comparison nights across 77 nights.

    What else changed: no nearby starts were recorded.

    Next study: repeat Total sleep duration after a dated ZenoWell taVNS window.

1 selected member case · not a response rate

Logged members
40
Members with repeats
5
Observations
1
Nights
77
Measurements
77
Sources and context

Device-study members with real wearable total sleep on logged use and non-use nights.

  • report-lines-414-430, reviewed by independent verifier

1 selected case shown with this evidence.

No clear change

Total sleep duration

Verified wearable total sleep duration · Aim: higher

Sleep regularity

—Neutral result

Sleep regularity did not outperform sleep duration on any matched-night definition tested in Issue 01.

0 selected member cases · not a response rate

Sources and context

Members with matched wearable nights under the tested bedtime-regularity definitions.

  • report-lines-559-604, reviewed by independent verifier
Keep the map

Take every result into your next experiment.

Get the Issue 01 Evidence Map by email. It groups the same evidence by outcome and by intervention, including what worked, what did not, and what Phoenix wants to test next.

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Turn evidence into your next test

Magnesium and homocysteine is 7 members from an answer.

Forty carriers with a dated start and a repeat blood test close it. Creatine, vitamin D3 and B12 sit further back. Your next blood test is somebody else's answer, and theirs is yours.

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