Being fit helps keep arteries young—even if you're overweight

Original Title

Cardiorespiratory Fitness and Carotid Intima–Media Thickness in Physically Active Young Adults: CHIEF Atherosclerosis Study

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Summary

Even if you're a little chubby, if you can run fast, your artery walls are thinner and healthier. But if your blood has too much fat (triglycerides), your artery walls get thicker.

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Surprising Findings

Triglycerides were the ONLY blood marker linked to artery thickening — not LDL, not glucose, not blood pressure.

For decades, LDL cholesterol has been the #1 villain in heart disease. This study says in young, active adults, it’s triglycerides — often ignored by mainstream health advice.

Practical Takeaways

If you’re under 40, focus on improving your 3K run time or VO2 max — even 10% faster could mean measurably healthier arteries.

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