More than a billion people worldwide are living with obesity today. That number has doubled in the last 30 years. According to the World Health Organization (WHO), chronic diseases like obesity and diabetes now account for the majority of deaths globally, with seven out of 10 of the top leading causes of death attributed to preventable diseases. Not only do low-quality diet and poor fitness habits lead to premature aging and death but they also place great strain on global economies, spending a disproportionate share of GDP on health. In an age of scarce resources and dwindling health, how can blockchain create a change?