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Central Heat and Air, and Reduced Heart attacks?
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bobby75703 posted:
People think I'm nuts when I cite modern day central heat and air playing a role in the decline of vascular disease after 1970.

Few people had central air before 1970, if they had A/C at all. The growth of central Air coincides with the decline in heart disease in the US. Of course association doesn't prove causation, but there may be a link.

We know that heart attacks are more likely to occur in extreme temperature conditions, hot or cold. But it may go beyond that.

Central A/C cleans the air. Not just the main dust filter, but thru condensation on the evaporator coil taking out the fine particulate and sending it out the drain pipe in a trickle of water.

Cleaner, dryer, more dense air is inhaled by the occupants, improving artery health.

http://www.news.harvard.edu/gazette/1997/09.25/HeatingACReduce.html
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