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Leo’s approach was distinguished by his understanding of the genetic influences on our health and well-being and his analytical approach to optimized living. His analytical method was driven by his background as a decision scientist. Although he had no formal training in biology, Leo had six years of training in advanced statistical analysis, mathematical analysis, and study design, all of which influenced his studies of academic publications on the subject of human performance and longevity.

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Before developing his passion for optimized living, Leo worked as a financial analyst for a major private equity firm. He held degrees in science from Carnegie Mellon and the London School of Economics. He also began his career as a researcher funded by the National Health Service (NHS) of the United Kingdom, in the field of decision science.