But do we really want algorithms knowing what we want better than ourselves, so they can determine -- faster than real time -- where we should stay, when we should eat, who we should meet or what we should buy?

CNN: Should we fear mind-reading future tech?

"We are emphasizing the positive message of what people should eat, " said Krauss.

CNN: Health - Heart experts' advice: Eat more fish in a balanced diet - October 5, 200

But the idea of focusing on what you should eat, instead of what you can't, could change the way we look at weight loss in America, Danziger says.

CNN: Eat more 'superfoods' to lose weight