What do tweets say about our health?

A LITTLE BIRD TOLD US: Twitter's options were unusually active on April 7 with total volume more than 250,000 contracts, or twice the average daily volume, according to Trade Alert data.

Tapping into the Twitter stream could help researchers understand how healthy people’s lifestyles are and how to target improved public health, according to a recent study. 

Using geotagged tweets, researchers at the Universities of Utah and Washington were able to build a map of the US by neighbourhood, with indicators of how happy and active people in that neighbourhood are and what their diets are like.