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How are calories measured in food? Ask USA TODAY

How are calories measured in food? Ask USA TODAY

Reporter Elizabeth Weise talks about the science behind measuring calories in food in her answer to this reader question. Have a question of your own? Then send it to askusatoday@usatoday.com or ask it using #askusatoday on Twitter.

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How are calories measured in food? Ask USA TODAY

Reporter Elizabeth Weise talks about the science behind measuring calories in food in her answer to this reader question. Have a question of your own? Then send it to askusatoday@usatoday.com or ask it using #askusatoday on Twitter.