Digital health is projected to become the most profitable sector in 2016, with over 160,000 health and fitness apps and a market size expected to reach £150 billion by 2020. Digital health uses information technology like hardware and software to manage, track, and analyze individual and population health and wellness. Key trends in digital health include ingestibles, embeddables, and invisibles. Healthcare is changing as the power is increasingly placed in the hands of individuals through digital tools.