SAN FRANCISCO, CA - JULY 22: Health advocates hold signs during a rally in favor of a soda tax at San Francisco City Hall on July 22, 2014 in San Francisco, California. The San Francisco Board of Supervisors will vote on Tuesday to place a measure on the November ballot for a 2-cents-per-ounce soda tax. If the measure passes in the November election, tax proceeds would help finance nutrition, health, disease prevention and recreation programs. (Photo by Justin Sullivan/Getty Images)
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Getty Images News Justin Sullivan