Wed, May 15 – It’s one of the greatest inventions in the last 150 years: the light bulb. Without it our lives would change dramatically! Now we can watch television, view our smartphones, and stay up after dark. Yet sometimes being in the dark is more desirable, such as when it comes to good sleep. Dr. James Marcum takes a look at the causes of sleep deprivation, its costs, and its cure, Wednesday at 12pm CDT on Heartwise.

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