Most non-communicable diseases have multifactorial causes, making it difficult to tease out the impact of just one factor, in this case, physical activity.
lifestyle choices
The research used our old friend, the UK Biobank, a repository of genetic information on a large number of Brits, as well as a similar genetic registry in Finland, the FinnGen.
Most health outcomes studies have a laundry list of covariates, e.g., age, gender, co-morbidities, and socioeconomic factors, all statistically adjusted to provide outcomes. But are all those co-variants equal?