By Kathryn Doyle (Reuters Health) – 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 U.S. by neighborhood, with indicators of how happy and active people in that neighborhood are and what their diets are like. “Overall I think the patterns make sense, more fast food restaurants in the area are correlated with more fast food mentions, but I was surprised that coffee was so highly ranked,” said lead author Quynh C. Nguyen of the University of Utah College of Health in Salt Lake City.