The Claim
In 1991–1992, the ischemic heart disease mortality rate among men aged 30–49 years was 9.4 per 100,000 in Tokyo and Osaka prefectures and 5.4 per 100,000 in the rest of Japan.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Between 1991 and 1992, men aged 30 to 49 in Tokyo and Osaka died from ischemic heart disease at a rate of 9.4 per 100,000, while men in the rest of Japan died at a rate of 5.4 per 100,000.
See the scientific wording
In 1991–1992, the ischemic heart disease mortality rate among men aged 30–49 years was 9.4 per 100,000 in Tokyo and Osaka prefectures, compared to 5.4 per 100,000 in the rest of Japan.
Men in big cities eat more saturated fats and salt, which raises blood cholesterol and pressure, while chronic stress keeps stress hormones high, damaging blood vessel walls and speeding up plaque buildup that blocks heart arteries.
What the research says
1 studyThe study found that in the early 1990s, young men in Tokyo and Osaka died from heart disease at almost twice the rate of young men in other parts of Japan — exactly what the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.