Dr. Jeffrey Kopin, Chief Medical Officer for Northwestern Medicine Lake Forest Hospital, joins John to talk about how useful a measurement BMI is, how much water you should drink every day, the dangers of smoking cigarettes and more.

Dr. Jeffrey Kopin, Chief Medical Officer for Northwestern Medicine Lake Forest Hospital, joins John to talk about how useful a measurement BMI is, how much water you should drink every day, the dangers of smoking cigarettes and more.
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The John Williams Show
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