Dr. Howard Smith Oncall

Vidcast:  https://youtu.be/JY5nRSzsOdw If you sleep less than 7 hours each night, you are deficient in the microRNA regulators that permit your genes to refresh your heart tissues and maintain good vascular health.  This warning stems from work at the University of Colorado at Boulder that studied 24 healthy middle-aged men and women measuring their microRNA concentrations and tabulating their sleep. The group that clocked only 5 to 6.8 hours of sleep a night had 40 to 60% lower levels of the microRNAs that regulate inflammation, immunity, and vascular stability when compared to those sleeping 7 to 8.5 hours a night.  The 7 hour threshold seems to be a constant, and the study investigators cannot yet explain why. So, if you want to keep your heart and the blood vessels that feed all your vital organs healthy, get those ZZZs. Jamie G. Hijmans, Ma'ayan Levy, Vinicius Garcia, Grace M. Lincenberg, Kyle J. Diehl, Jared J. Greiner, Brian L. Stauffer, Christopher A. DeSouza. Insufficient sleep is associated with a p