Thursday, July 18, 2013

Why Do We Drink Lemonade When It’s Hot Out?

The role of acidity in quenching thirst.

Lemonade. 
 The acid in lemonade stimulates salivation, making you feel hydrated.

A heat wave has many people in the eastern United States reaching for cold beverages such as lemonade and citrus-flavored soda. American settlers used to cool off with vinegar water. Why are sour drinks associated with refreshment?

Because they stimulate salivation. When you start to become dehydrated on a hot day, your body’s need for liquid manifests as a dry mouth. Research out of Japan in the 1960s showed that sour flavors stimulate salivation more than any other taste. Acidic drinks wet the mouth and give the impression of hydration even after your lemonade or vinegar water is finished.

For the rest of the story: http://www.slate.com/articles/health_and_science/explainer/2013/07/lemonade_on_a_hot_day_why_are_acidic_drinks_refreshing.html

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