He now is a marketing and public-policy professor at George Washington University.

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But they expect serious scientific and public-policy issues to be properly assessed, not massaged away by slick marketing and public relations in the interests of private profit.

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In her new role, Sandberg will oversee the company's sales, marketing, business development, human resources, public policy, privacy and communications.

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"The problem is not coming up with good ideas about what to do about obesity, it's about actually doing them, " said Margo Wootan, director of nutrition policy for the Center for Science in the Public Interest, which has advocated for stronger nutritional standards in marketing and school lunch programs.

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