<p>Posted on: 4:40 pm, February 7, 2014, by Meryl Lin McKean, updated on: 05:47pm, February 7, 2014</p><p>KANSAS CITY, Mo. Call it "seeking behavior." We want that next message. We're not unlike our ancestors, the hunter-gatherers, except we're hunting and gathering on digital devices.</p><p>"Our cortisol level rises each time we get that stimulus," said Dr. Tracy Stevens of the Muriel I. Kauffman Women's Heart Center at Saint Luke's Hospital.</p><p>Dr. Stevens says when that level rises throughout the day, it can't be good for the heart. She says constant stimulation of cortisol, the stress hormone, increases blood pressure and lays down belly fat. It also creates inflammation.</p><p><a href="http://fox4kc.com/2014/02/07/the-message-about-constant-messaging-it-cant-be-good-for-your-heart-2/">Keep reading...</a></p>