Health · Medical Research · 2 hrs ago
Long-term Japanese study links some seafood choices to lower mortality
Researchers tracked 90,944 adults in Japan for an average of 20.8 years to examine how seafood choices related to mortality.
Participants were aged 40 to 69 when they joined, and researchers compared seafood intake, including different fish types and processing methods.
Moderate seafood intake was associated with lower overall mortality among women, but the study did not report the same finding for men.
Among women, eating more omega-3-rich fish was associated with lower mortality from diseases affecting blood flow to the brain; among men, that association was found for unsalted seafood.
The findings differed by sex and seafood type, and they show associations rather than proof that particular foods caused the outcomes.
Salted and dried seafood can contain more sodium, which is linked to high blood pressure and cardiovascular risk.
The study suggests seafood type and preparation may matter, but its findings do not establish what people should eat or whether the associations apply outside this Japanese population.
Researchers analyzed data from 90,944 Japanese adults to study how seafood choices relate to long-term mortality.
Participants were followed for an average of 20.8 years.
Moderate seafood intake was associated with lower all-cause mortality among women.
Omega-3-rich fish in women and unsalted seafood in men were associated with lower cerebrovascular disease mortality.
The study examined seafood types, processing methods and marine omega-3 fatty acids.
- Who
- Researchers studied 90,944 Japanese adults aged 40 to 69 at initial recruitment.
- What
- The study examined associations between seafood intake and all-cause and cause-specific mortality.
- When
- Participants were followed for an average of 20.8 years; the article was published on 2026-10-21.
- Where
- 11 public health center areas in Japan.
- Why
- To investigate whether seafood types, processing methods and marine omega-3 fatty acids relate to long-term mortality.
This story does not have two clearly opposing sides.
Participants aged 40 to 69 reported their usual seafood intake using a food-frequency questionnaire.
Researchers tracked participants to assess mortality.
News-Medical published an article about the study.
- Participants
- 90,944 Japanese adults
- Follow-up
- Average of 20.8 years
- Study areas
- 11 public health center areas in Japan
- Women
- Moderate seafood intake was associated with lower all-cause mortality.
- Cerebrovascular disease
- Omega-3-rich fish in women and unsalted seafood in men were associated with lower mortality.