Dia is building the Internet of People. We live in a world where individuals can track their temperature, heart rate, and metabolism in real-time, yet the biochemicals that govern key aspects of our health remain unmonitored. Dia aims to revolutionize healthcare by making point-of-care, noninvasive sensors that measure many molecules critical to mental and physical health. We are starting with the measurement of basic metabolic biomarkers in saliva using a small table-top device. The data can be immediately transferred to a healthcare professional for better monitoring and treatment of the 40+ million Americans living with heart and kidney failure.