Lifestyle medicine still has a limited - scalable- revenue model. One of the consequences is that it is difficult to finance large studies. It also doesn't help that there is no standard for measuring (positive) health outcomes. In this project, which is a cross-over with our population health program, a validated basic set of questions is being developed to measure health unambiguously and to make interventions and outcomes more comparable. GezondMeten is a project consisting of researchers from Leiden University Medical Center (LUMC), Alette Jacobs School of Public Health (University of Groningen), Salut, TNO and Lifestyle4Health. We actively support this initiative, together with the Fred Foundation and the Institute for Positive Health (iPH). The questionnaire has now been developed and published.