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Fish consumption and cognitive decline with age in a large community study
Morris MC, Evans DA, Tangney CC, Bienias JL, Wilson RS.. Archives of neurology, 2005-10-10
Topic: Brain imaging, connectivity and assessment
Background Dietary intake of fish and the omega-3 fatty acids have been associated with lower risk of Alzheimer disease and stroke. Objective To examine whether intakes of fish and the omega-3 fatty acids protect against age-related cognitive decline. Design Prospective cohort study. Setting Geographically defined Chicago, Ill, community. Participants Residents, 65 years and older, who participated in the Chicago Health and Aging Project. Main outcome measure Change in a global cognitive score estimated from mixed models. The global score was computed by summing scores of 4 standardized tests. In-home cognitive assessments were performed 3 times over 6 years of follow-up. Results Cognitive scores declined on average at a rate of 0.04 standardized units per year (SU/y). Fish intake was associated with a slower rate of cognitive decline in mixed models adjusted for age, sex, race, education, cognitive activity, physical activity, alcohol consumption, and total energy intake. Compared with a decline rate in score of -0.100 SU/y among persons who consumed fish less than weekly, the rate was 10% slower (-0.090 SU/y) among persons who consumed 1 fish meal per week and 13% slower (-0.088 SU/y) among persons who consumed 2 or more fish meals per week. The fish association was not accounted for by cardiovascular-related conditions or fruit and vegetable consumption but was modified after adjustment for intakes of saturated, polyunsaturated, and trans fats. There was little evidence that the omega-3 polyunsaturated fatty acids were associated with cognitive change. Conclusions Fish consumption may be associated with slower cognitive decline with age. Further study is needed to determine whether fat composition is the relevant dietary constituent.
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APA 7th
Morris, M. C., Evans, D. A., Tangney, C. C., Bienias, J. L., & Wilson, R. S. (2005). Fish consumption and cognitive decline with age in a large community study. Archives of neurology. https://doi.org/10.1001/archneur.62.12.noc50161
Vancouver
Morris MC, Evans DA, Tangney CC, Bienias JL, Wilson RS. Fish consumption and cognitive decline with age in a large community study. Archives of neurology. 2005. doi:10.1001/archneur.62.12.noc50161. PMID: 16216930.
BibTeX
@article{morris2005-16216930,
author = {Morris, M. C. and Evans, D. A. and Tangney, C. C. and Bienias, J. L. and Wilson, R. S.},
title = {{Fish consumption and cognitive decline with age in a large community study}},
journal = {Archives of neurology},
year = {2005},
doi = {10.1001/archneur.62.12.noc50161},
pmid = {16216930},
url = {https://doi.org/10.1001/archneur.62.12.noc50161}
}
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Key findings
- Background Dietary intake of fish and the omega-3 fatty acids have been associated with lower risk of Alzheimer disease and stroke.
- Results Cognitive scores declined on average at a rate of 0.04 standardized units per year (SU/y).
- Fish intake was associated with a slower rate of cognitive decline in mixed models adjusted for age, sex, race, education, cognitive activity, physical activity, alcohol consumption, and total energy intake.
- Compared with a decline rate in score of -0.100 SU/y among persons who consumed fish less than weekly, the rate was 10% slower (-0.090 SU/y) among persons who consumed 1 fish meal per week and 13% slower (-0.088 SU/y) among persons who consumed 2 or more fish meals per week.
- There was little evidence that the omega-3 polyunsaturated fatty acids were associated with cognitive change.
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Study details
- Study designcohort study
- Evidence strengthModerate
How this study scored 52/100
Published in a peer-reviewed journal, and it is a cohort study following people over time. Scored zero for sample size, effect reported, studied in people and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 30 of the 58 points we could judge it on, which is 52 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Archives of neurology) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 7 / 12 | A cohort study following people over time |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2005 — older than 20 years, still counted |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 16216930) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 30 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 30 of the 58 points we could judge it on is 52 out of 100. |
| Total | 52 / 100 | — |
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