Siim Land: Is Your Sleep Schedule Causing Arterial Plaque?

Key Takeaways

• Aim for 6-8 hours of sleep nightly to minimize atherosclerosis risk (extremes below 5.5h or above 8h increase risk).
• Prioritize sleep quality over duration in the 6-8h window—6h of high-quality sleep beats 8h of poor sleep.
• Maintain consistent sleep timing (bedtime within 30min variation, sleep duration within 1h variation) to reduce plaque risk.
• Younger individuals (under 40) should avoid sleeping less than 7h, as it’s linked to higher plaque risk in this group.
• For existing plaque, sleeping 6-8h with high quality improves plaque stability (avoid <5.5h).

Products & Gear Mentioned

• Photon counting CT scan (advanced low-radiation scan for plaque detection).

Notable Quotes

“6 hours of high-quality sleep is better than low-quality 8 hours of sleep.”

“Sleep regularity predicts atherosclerosis risk more than total sleep duration.”

Bottom Line

Optimize your sleep for arterial health by prioritizing 6-8 hours of high-quality, consistent sleep, with strict bedtime regularity—especially if you’re under 40 or have existing plaque.

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