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Plain omega-3: what it changed, and what it did not

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

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 limits

Key findings

Phoenix has measured Plain omega-3 against 5 exact outcomes for APOE4 carriers. Member #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days. Member #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days. Member #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window. Member #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window. Member #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days.

Plain omega-3 evidence by outcome
OutcomeDirectionWhat we observed
HDL cholesterolRepeated positiveMember #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days.
High-sensitivity C-reactive proteinRepeated positiveMember #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days.
LDL cholesterolPositive individual resultMember #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window.
Omega-3 IndexCollecting evidenceThe omega-3 family has 156 logged users but only four with both use and a repeat Omega-3 Index; clean eligibility is unknown.
TriglyceridesRepeated positiveMember #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window.
Vitamin D levelRepeated positiveMember #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days.

Questions about Plain omega-3

What is the effect of Plain omega-3 for APOE4 carriers?

Phoenix has measured Plain omega-3 against 5 exact outcomes for APOE4 carriers. Member #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days. Member #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days. Member #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window. Member #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window. Member #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days.

Does Plain omega-3 change HDL cholesterol for APOE4 carriers?

Member #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days. Support: 2 logged members, 2 members with repeats, 2 observations, 4 measurements.

Does Plain omega-3 change High-sensitivity C-reactive protein for APOE4 carriers?

Member #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days. Support: 2 logged members, 2 members with repeats, 2 observations, 4 measurements.

Does Plain omega-3 change LDL cholesterol for APOE4 carriers?

Member #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window. Support: 156 logged members, 1 members with repeats, 1 observations, 2 measurements.

Does Plain omega-3 change Omega-3 Index for APOE4 carriers?

The omega-3 family has 156 logged users but only four with both use and a repeat Omega-3 Index; clean eligibility is unknown. Support: 156 logged members, 4 members with repeats, 8 measurements.

Does Plain omega-3 change Triglycerides for APOE4 carriers?

Member #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window. Support: 159 logged members, 4 members with repeats, 4 observations, 8 measurements.

Does Plain omega-3 change Vitamin D level for APOE4 carriers?

Member #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days. Support: 2 logged members, 2 members with repeats, 2 observations, 4 measurements.

What changed for real APOE4 carriers?

Search by health goal or intervention to see what changed for real members, including results that moved the wrong way.

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Plain omega-3 · 6 outcomes shown.

Intervention categorySupplements
InterventionPlain omega-3

Plain omega-3

SupplementsOutcomes: 6

HDL cholesterol: Increase 8–13 mg/dL

Cases: 2Case range

Details

Member #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days.

Plain omega-3

✓Repeated positive

Member #58A103's HDL cholesterol moved from 85 to 93 mg/dL in 118 days.

Selected member cases

  1. Phoenix memberAPOE3/458female

    HDL cholesterol

    Before85After93mg/dL+9.4%

    118 days between measurements

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat HDL cholesterol after a dated Plain omega-3 window.

  2. Phoenix memberAPOE4/451female

    HDL cholesterol

    Before61After74mg/dL+21.3%

    191 days between measurements

    Mixed or inconclusive

    Since this result, HDL swung to 57 mg/dL, below the original baseline, before recovering to 77 mg/dL. The two lowest readings came from one lab and the three highest from another, a lab-to-lab comparability question underneath the printed rise.

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat HDL cholesterol after a dated Plain omega-3 window.

logged members
2
members with repeats
2
observations
2
measurements
4

Full record

High-sensitivity C-reactive protein: Decrease 0.2–1 mg/L

Cases: 2Case range

Details

Member #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days.

Plain omega-3

✓Repeated positive

Member #09CC01's High-sensitivity C-reactive protein moved from 1.2 to 0.2 mg/L in 139 days.

Selected member cases

  1. Phoenix memberAPOE4/466female

    High-sensitivity C-reactive protein

    Before1.2After0.2mg/L-83.3%

    139 days between measurements

    Promising early signal

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat High-sensitivity C-reactive protein after a dated Plain omega-3 window.

  2. Phoenix memberAPOE4/458female

    High-sensitivity C-reactive protein

    Before1.9After1.7mg/L-10.5%

    363 days between measurements

    Full stack credited: Omega-3 (lead), Statin (undated).

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat High-sensitivity C-reactive protein after a dated Plain omega-3 window.

logged members
2
members with repeats
2
observations
2
measurements
4

Full record

LDL cholesterol: Decrease 30 mg/dL

Cases: 1

Details

Member #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window.

Plain omega-3

✓Positive individual result

Member #1EA5B3's LDL cholesterol moved from 129 to 99 mg/dL, down 23.3%, across a one-year clean window.

Little published human data on this link yet.

Selected member cases

  1. Phoenix memberAPOE4/466male

    LDL cholesterol

    Before129After99mg/dL-23.3%

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat LDL cholesterol after a dated Plain omega-3 window.

logged members
156
members with repeats
1
observations
1
measurements
2

Full record

Omega-3 Index: Status Not enough data

Details

The omega-3 family has 156 logged users but only four with both use and a repeat Omega-3 Index; clean eligibility is unknown.

Plain omega-3

?Collecting evidence

The omega-3 family has 156 logged users but only four with both use and a repeat Omega-3 Index; clean eligibility is unknown.

logged members
156
members with repeats
4
measurements
8

Collecting evidence

No answer yet on Omega-3 Index

Plain omega-3 is being tracked against Omega-3 Index, but Phoenix has not yet published a ranked result for this exact question.

This question needs 40 carriers with a dated start and a repeat test before Phoenix can answer it. Every carrier who logs one moves this page closer to an answer, including you.

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Not yet measured: how to test it

The consumed omega-3 family needs matched form, dose and repeat Index measurements rather than assumed status change.

How to test it

Baseline
Record an Omega-3 Index before the dated start.
Duration
112 days
Adherence
Record omega-3 form, dose and adherence throughout the window.
Retest
Repeat the Omega-3 Index after 16 weeks.
Falsifier
A predeclared matched-dose cohort does not raise the Omega-3 Index.
Eligible-member target
40 members

Full record

Triglycerides: Decrease 14–93 mg/dL

Cases: 5Case range

Details

Member #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window.

Plain omega-3

✓Repeated positive

Member #1EA5B3's triglycerides moved from 64 to 40 mg/dL, down 37.5%, across a one-year clean window.

Selected member cases

  1. Phoenix memberAPOE3/458female

    Triglycerides

    Before62After48mg/dL-22.6%

    77 days between measurements

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Triglycerides after a dated Plain omega-3 window.

  2. Phoenix memberAPOE4/466male

    Triglycerides

    Before64After40mg/dL-37.5%

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Triglycerides after a dated Plain omega-3 window.

  3. Phoenix memberAPOE4/455female

    Triglycerides

    Before94After67mg/dL-28.7%

    216 days between measurements

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Triglycerides after a dated Plain omega-3 window.

  4. Phoenix memberAPOE4/455male

    Triglycerides

    Before154After61mg/dL-60.4%

    102 days between measurements

    Full stack credited: Omega-3 (lead), Statin (co).

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Triglycerides after a dated Plain omega-3 window.

  5. Phoenix memberAPOE4/454male

    Triglycerides

    Before98After71mg/dL-27.6%

    203 days between measurements

    Full stack credited: Omega-3 (lead), Statin (co), Tirzepatide (co), Curcumin (co).

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Triglycerides after a dated Plain omega-3 window.

logged members
159
members with repeats
4
observations
4
measurements
8

Full record

Vitamin D level: Increase 4–15.5 ng/mL

Cases: 2Case range

Details

Member #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days.

Plain omega-3

✓Repeated positive

Member #9FAAE3's Vitamin D level moved from 28.2 to 43.7 ng/mL in 259 days.

Selected member cases

  1. Phoenix memberAPOE4/455female

    Vitamin D level

    Before28.2After43.7ng/mL+55%

    259 days between measurements

    Promising early signal

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Vitamin D level after a dated Plain omega-3 window.

  2. Phoenix memberAPOE4/458female

    Vitamin D level

    Before60After64ng/mL+6.7%

    363 days between measurements

    Full stack credited: Omega-3 (lead), Statin (undated).

    What else changed and what to test next

    What else changed: no nearby starts were recorded.

    Next study: repeat Vitamin D level after a dated Plain omega-3 window.

logged members
2
members with repeats
2
observations
2
measurements
4

Full record

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