[BurningFrog]

People won't log all the food they eat, but supermarkets actually have data on what food people buy.

So correlating that data with people's health could be very interesting!

I don't think that has much chance getting past an IRB though.

[ijustlovemath]

Youd have to somehow control for waste and individual consumption within a household, which would be very difficult!

[BurningFrog]

Not for statistical studies across a population.

[olyjohn]

God forbid we use the data to do something good. But for marketing? Yeah no problem.