Wearable fitness devices and smartphone health apps that generate continuous streams of data will be the biggest catalysts for change at your doctor's office in the coming decades. Investors seem excited about the potential. Digital health startups attracted investments of $6.5 billion in 2014, a 125 percent increase from the previous year. If the momentum continues, wearables—coupled with social and analytic platforms based in the cloud—are poised to offer a new digitized picture of our health in the next decade. Here are five trends accelerating this convergence of physiology and technology: