A new study shows rising global temperatures are sharpening Americans' sweet tooth.

An international team of researchers analyzed weather conditions and consumer spending habits, and found that as temperatures rise, Americans increase their consumption of both sugary drinks and cold desserts such as ice cream.

The team compared wind, humidity and precipitation records across a 15-year history for 40,000 to 60,000 American households.

They used the American Heart Association's daily sugar recommendations, which are 36 grams for men and 25 grams for women, as a baseline for comparison.

And they collected information on consumer spending habits and nutritional information of the food items bought.

Together, the variables showed a correlation: As temperatures rose from 54 and 86 degrees F

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