Story perspectives

Early Smoking Doubles Heart Attack, Stroke Risks: Study

1/23/2026

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Summary

Story summary

A nationwide study found that early smoking initiation significantly increases the risk of myocardial infarction and stroke.
The study involved nearly 10 million participants and found higher risk for those who began before age 30, increasing with pack-years.
The study notes limitations, including potential misclassification of smoking status and unmeasured confounding factors.
Still, findings support smoking prevention for adolescents and young adults to improve cardiovascular health.

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Story summary

A nationwide study found that early smoking initiation significantly increases the risk of myocardial infarction and stroke.
The study involved nearly 10 million participants and found higher risk for those who began before age 30, increasing with pack-years.
The study notes limitations, including potential misclassification of smoking status and unmeasured confounding factors.
Still, findings support smoking prevention for adolescents and young adults to improve cardiovascular health.