Study: Tweets can be used to predict heart disease

Something to think about the next time you send a tweet.

Researchers at the University of Pennsylvania studied 140 million random tweets over a two year period.

They found what people said on the social media site correlated with heart disease death rates where those tweets originated.

Communities where people tweeted more about hostility, hatred and fatigue were more likely to have higher rates of heart disease.

Areas where people tweeted more about optimism seemed to have lower rates.