Research and videos
Saturated fat and coconut oil: the research and Kevin's videos
How much saturated fat can an APOE4 carrier eat, and is coconut oil different?
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This page has no results from Phoenix members yet. It shows what published research says, and what Kevin and the experts say in his videos.
See what Phoenix members have measuredHow much saturated fat can an APOE4 carrier eat, and is coconut oil different?
Eating less saturated fat lowers LDL cholesterol and heart events, and APOE4 carriers probably see a bigger ApoB drop when they swap it out. Coconut oil raises LDL more than olive or other vegetable oils. Links to memory in carriers are early: one study tied more saturated fat to faster decline, while a 2026 study tied more meat to better cognition.
What the research says
Grade AAPOE4-specific evidence: limited
Cutting saturated fat lowers LDL and heart events, coconut oil raises LDL against other oils, and in carriers the cholesterol response is probably larger; brain effects are uncertain.
Key studies
Hooper 2020, CochraneGrade A
15 trials, about 59,000 people: cutting saturated fat lowered combined cardiovascular events by about a fifth.
Read on PubMed (opens in a new tab)Neelakantan 2020, CirculationGrade A
Meta-analysis of trials: coconut oil raised LDL cholesterol against non-tropical vegetable oils.
Read on PubMed (opens in a new tab)Griffin 2018, NutrientsGrade B
When saturated fat was replaced, APOE4 carriers had larger drops in total cholesterol and ApoB than E3/E3.
Read on PubMed (opens in a new tab)
2 more key studies
Liu 2024, Journal of Nutrition, Health and AgingGrade C
3,360 older adults: in carriers, more calories from saturated fat went with faster cognitive decline (observational).
Read on PubMed (opens in a new tab)Norgren 2026, JAMA Network Open
In carriers, higher total meat intake went with better cognition and lower dementia risk; processed meat was unfavourable (observational).
Read on PubMed (opens in a new tab)
What Kevin and experts say
4 passages for, 3 against, 4 with a caution
Now showing: Dr. Grant Fraser · 31:41
Open on YouTube (opens in a new tab)For4 passages
Cutting saturated fat lowers ApoB more in carriers.
“ApoE4 carriers show significantly greater decreases in total cholesterols and Apo B among carriers of E4 when saturated fat was replaced.”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Carriers' cholesterol responds more to diet.
“blood cholesterol in APOE4 carriers appear more responsive to changes in dietary cholesterol and fat consumption than in non-carriers”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Cutting saturated fat was Kevin's first ApoB win.
Dr. Kevin Tran
Watch the Short on YouTube (opens in a new tab)
For sensitive carriers, data still lean toward less saturated fat.
Dr. Kevin Tran
Watch the Short on YouTube (opens in a new tab)Correction: the 2026 JAMA Network Open meat study did split results by APOE genotype; higher meat intake went with better cognition only in carriers.
Read the study (opens in a new tab)
Against3 passages
Saturated fat raises LDL more in carriers.
“[APOE4] carriers have heightened sensitivity to saturated fat”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Saturated fat is linked to faster decline in carriers.
“among participants with the APOE4 risk [allele] higher intakes of total and saturated fat were associated with a faster decline in global cognition.”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Saturated fat is particularly harmful for APOE4 carriers.
Dr. Kevin Tran
Watch the Short on YouTube (opens in a new tab)
With a caution4 passages
Saturated fat raises ApoB more in many APOE4 carriers.
“people with apoE4s tend to be hyper responders to saturated fat”
Dr. Grant Fraser, Board-certified anti-aging and family medicine physician, APOE4 carrier
Saturated fat from beef and dairy is probably more harmful than from olive oil.
“If you're getting it from you know, beef for example, if you're getting it from dairy, probably more harmful.”
Dr. Grant Fraser, Board-certified anti-aging and family medicine physician, APOE4 carrier
Correction: trials show coconut oil raises LDL cholesterol compared with olive and other non-tropical plant oils.
Read the study (opens in a new tab)
Pick lean cuts and track lipids.
“always choose the leanest cut you can, to track your lipid and manage accordingly”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Dr. Fraser would have carriers, especially 4/4, keep saturated fat very low.
Dr. Grant Fraser
Watch the Short on YouTube (opens in a new tab)Correction: Adventists overall lived about 7 (men) and 4 (women) years longer than other Californians; pesco-vegetarians had about 19% lower death rates.
Read the study (opens in a new tab)
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