From an expert: How melatonin can impact your heart health

From an expert: How melatonin can impact your heart health
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MADISON, Wis. (CBS 58) -- There's a warning for people using melatonin to fall asleep. New research shows it can have a serious impact on your heart health. CBS 58 was joined by UW Health Doctor Jeff Pothof to break down the study. 

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