Browse by intervention

Sleep mask: what it changed, and what it did not

One intervention, every measured benefit and result that did not improve in Issue 01. See who it moved for, where it stayed neutral or went the other way, and the next hypothesis Phoenix can validate.

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 mask evidence dossier

Evidence collected through 2026-08-09.

Most promising

Deep plus REM sleep

Verified wearable deep and REM sleep stages · Aim: higher

Sleep mask

✓Repeated positive

One curated case had 134 more deep-plus-REM minutes; the 11-member ten-tag-day cohort averaged about 17 more minutes and stayed positive at every floor.

Selected member cases

  1. Fine Tuner · APOE3/4 · female · age 50-59

    Sleep-mask nights carried 134 more minutes of deep plus REM sleep under independent recomputation.

    What else changed: no nearby starts were recorded.

    Next study: repeat Deep plus REM sleep after a dated Sleep mask window.

1 selected member case · not a response rate

Logged members
19
Members with repeats
11
Observations
1
Sources and context

Members with a sleep-mask tag and verified wearable stages, evaluated at named minimum tagged-day floors.

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

1 selected case shown with this evidence.

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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