Cafodd prosiect Doeth am Iechyd Cymru ei lansio yn 2016 i astudio iechyd a lles pobl Cymru ac i helpu'r gwasanaeth iechyd a'r gwasanaethau cymdeithasol i gynllunio ar gyfer y dyfodol. Mae'r astudiaeth, sy'n cael ei chefnogi gan Lywodraeth Cymru a'i harwain gan Brifysgolion Caerdydd ac Abertawe, yn gofyn i bobl ateb cwestiynau am eu hiechyd, eu ffordd o fyw a'u lles mewn arolwg 10 munud ar-lein, ac i wneud hynny bob chwe mis.
Healthwise Wales was launched in 2016 to study the health and wellbeing of people in Wales and to help the NHS and social services plan for the future. The study, backed by the Welsh Government and led by Cardiff and Swansea Universities, asks participants to answer a 10-minute online survey about their health, lifestyle and wellbeing every six months.