Research and videos
Blood pressure control: the research and Kevin's videos
What blood pressure should a carrier aim for, and does controlling it protect the brain?
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See what Phoenix members have measuredWhat blood pressure should a carrier aim for, and does controlling it protect the brain?
Lowering high blood pressure lowers the risk of dementia and memory decline: several large trials agree, and aiming lower (under 120 systolic in SPRINT) cut mild cognitive impairment and white matter damage. One unreviewed analysis suggests carriers gain more in absolute terms. Your doctor sets your own target, especially if your pressure is naturally low or you get dizzy.
What the research says
Grade AAPOE4-specific evidence: limited
Treating high blood pressure lowers dementia and cognitive impairment (high certainty); carriers may gain more in absolute terms (preprint).
Key studies
Hughes 2020, JAMAGrade A
12 trials, 92,135 people: blood pressure lowering went with less dementia or cognitive impairment (OR 0.93).
Read on PubMed (opens in a new tab)He 2025, Nat MedGrade A
Cluster trial, 33,995 people with high blood pressure: intensive treatment cut all-cause dementia 15%.
Read on PubMed (opens in a new tab)Peters 2022, Eur Heart JGrade A
Pooled data from 5 placebo-controlled trials: treatment lowered dementia odds by 13%.
Read on PubMed (opens in a new tab)
4 more key studies
SPRINT MIND 2019, JAMAGrade A
9,361 adults: aiming for systolic under 120 cut MCI (19%) and MCI-or-dementia (15%); dementia alone fell but not significantly.
Read on PubMed (opens in a new tab)SPRINT MIND 2019, JAMA (MRI)Grade B
Intensive treatment slowed growth of white matter lesions.
Read on PubMed (opens in a new tab)Xu 2026, medRxiv preprint (SPRINT)
Not peer reviewed: intensive control gave APOE4 carriers a larger absolute drop in dementia; relative effects similar to non-carriers.
Read on PubMed (opens in a new tab)Peila 2001, Stroke (Honolulu-Asia Aging Study)
Observational, men only: carriers with very high untreated systolic pressure had 13 times the risk of poor cognition; 1.9 in the treated group, with wide uncertainty.
Read on PubMed (opens in a new tab)
What Kevin and experts say
10 passages for, 1 with a caution
Now showing: Dr. Jeremy Pruzin · 18:34
Open on YouTube (opens in a new tab)For10 passages
Systolic under 120 cut MCI or dementia risk about 15%.
“risk was lowered by about 15% at the lower blood pressure goal”
Dr. Jeremy Pruzin, Cognitive and behavioral neurologist, Banner Alzheimer's Institute
Fewer dementia cases, but not statistically proven alone.
“when you looked at dementia alone, there were fewer cases of dementia, but it didn't quite reach that statistical significance threshold”
Dr. Jeremy Pruzin, Cognitive and behavioral neurologist, Banner Alzheimer's Institute
Lower blood pressure slowed white matter damage.
“these white matter hyperintensities, and there were fewer of these things. they grew less, there was less volume.”
Dr. Jeremy Pruzin, Cognitive and behavioral neurologist, Banner Alzheimer's Institute
Pruzin: lower blood pressure, if anything, helped carriers slightly more.
“So now there's more risk for ApoE4 carriers, but the protective effect of lower blood pressure if anything was a little bit stronger”
Dr. Jeremy Pruzin, Cognitive and behavioral neurologist, Banner Alzheimer's Institute
Kevin cites 13 to 1.9; one observational study with wide uncertainty.
“treatment of hypertension reduced the risk for carriers with high blood pressure from 13 to 1.9”
Dr. Kevin Tran, Founder of The Phoenix Community, Doctor of Pharmacy, APOE4/4 carrier
Correction: the 85% comes from one observational study of Japanese-American men; in randomised trials, lowering blood pressure cut dementia risk by about 7%.
Read the study (opens in a new tab)
Better blood pressure control is lowering dementia rates.
“good blood pressure control have really contributed to declining incidence rates of dementia both in Europe and US”
Dr. Prashanthi Vemuri, Mayo Clinic (AAIC 2025 resilience session)
Treating blood pressure may protect against amyloid.
“it seems that [antihypertensive] drug seem to be protecting toward the accumulation of [amyloid].”
Dr. Sylvia Villeneuve, Researcher, McGill University (AAIC 2025 conference clips)
Control blood pressure early, before vessels harden.
Dr. Jeremy Pruzin
Watch the Short on YouTube (opens in a new tab)
Blood pressure control may help carriers even more.
Dr. Jeremy Pruzin
Watch the Short on YouTube (opens in a new tab)
Lower blood pressure targets cut MCI and dementia risk.
Dr. Jeremy Pruzin
Watch the Short on YouTube (opens in a new tab)
With a caution1 passage
Over 85, targets may be relaxed.
“I think when people get past the age of 85, you know, we can loosen those goals a little bit.”
Dr. Jeremy Pruzin, Cognitive and behavioral neurologist, Banner Alzheimer's Institute
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