Eating seafood twice a week slows brain aging.
Partly True
Accuracy: Partly True. Partly True. One cited Neurology cohort of 1,623 adults age 65+ found fish intake around two or more servings weekly was associated with fewer MRI markers of vascular brain damage and possible lower later cognitive risk, especially under age 75, but it explicitly says the study shows association, not proof, and found no association at age 75+. The other source gives broad dementia-risk claims without enough underlying detail for this specific wording. Verdict confidence: 90/100. The supplied evidence strongly supports a narrower version of the claim: in a cohort of 1,623 older adults, eating fish about two or more times weekly was associated with fewer MRI markers of vascular brain damage and possible lower later cognitive risk, especially below age 75 (S5P1, S5P2, S5P3, S5P4). But the exact claim says seafood twice a week slows brain aging, which overstates both causality and scope. The key study explicitly says it shows association rather than proof, focuses on fish rather than all seafood, and found no association at age 75+ (S5P2, S5P4). The broader seafood/dementia claims in S6 are too unspecific in these excerpts to fully validate the exact wording. That makes Partly True a solid verdict. Method: verdict-evidence-v1. Not a calibrated probability.