Health · Medical Research · 1 hr ago
Japanese-style diets linked to lower mortality in a review
A review of research in Japan linked stronger adherence to predefined Japanese-style diets with lower overall and cardiovascular mortality.
These eating patterns often include rice, soy, seafood, miso soup, green tea, vegetables, seaweed and pickles.
The researchers examined 37 reports, but only three studies could be combined to assess mortality linked to predefined diet scores.
The combined results pointed to lower risk of death from any cause and from cardiovascular disease.
However, the results varied substantially between studies, so the association is not conclusive.
The review found no clear association with total cancer mortality, though links may differ by cancer type.
Researchers also noted that Japanese-style diets lack a widely accepted scoring system, making studies harder to compare.
A review found that stronger adherence to predefined Japanese-style diets was associated with lower all-cause and cardiovascular mortality among people in Japan.
The diets commonly include rice, soy products, seafood, miso soup, green tea, vegetables, seaweed and pickles.
The review included 37 reports, with 12 used in analytical synthesis and 25 in qualitative synthesis.
The pooled mortality analyses showed substantial differences between studies.
The review found no clear association with total cancer mortality, and results may vary by cancer type.
- Who
- Researchers reviewing studies of Japanese populations.
- What
- The review found that higher scores for predefined Japanese-style diets were associated with lower all-cause and cardiovascular mortality.
- When
- Published on 2026-10-21.
- Where
- The studies concerned community-dwelling populations in Japan.
- Why
- To synthesize evidence on associations between Japanese-style dietary patterns and health outcomes.
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- Reports retained
- 37
- Analytical synthesis
- 12 reports
- Qualitative synthesis
- 25 reports
- Predefined diet-score studies in meta-analyses
- 3
- Data-derived patterns reviewed visually
- 43
- JDI-9-like patterns
- 21