A preliminary analysis of two randomized grocery trials found that a potassium-rich DASH eating pattern did not push blood potassium into a dangerous range among adults taking several common blood-pressure medicines or NSAIDs. The finding is reassuring, but it is not yet a peer-reviewed paper.
What changed
Researchers combined data from 356 Black adults in Boston, average age 53 and 70% women. Half received three months of weekly DASH-patterned groceries plus nutrition counseling; the comparison group received grocery stipends without counseling. Average baseline potassium was normal—4.16 mmol/L in the DASH group and 4.18 mmol/L in the comparison group. Potassium did not rise to dangerous levels among participants using ACE inhibitors, ARBs, potassium-sparing diuretics, beta blockers or NSAIDs.
How strong is the evidence?
The source trials were randomized, but this safety result is a secondary pooled analysis presented as a conference abstract. The American Heart Association explicitly labels meeting abstracts preliminary and not peer reviewed. It assessed a laboratory safety marker, not cardiovascular events.
What remains uncertain
Participants began with normal potassium, and the findings may not apply to people with advanced kidney disease, high baseline potassium or different medication combinations. Full methods, subgroup counts and event details await peer-reviewed publication.
Why it matters
Potassium-rich foods can support blood-pressure control, yet medication and kidney function affect potassium handling. This study supports further testing; it does not mean everyone taking these medicines can increase potassium without clinical monitoring.
Illustrative stock photograph by Engin Akyurt on Unsplash; it does not depict the trial groceries, participants or results.
Sources
American Heart Association conference report, October 8, 2026; Hypertension Scientific Sessions moderated poster TH157.
