High body mass index is causally linked to an increased risk of vascular-related dementia, according to a Mendelian randomization study.

Researchers argue that, in some situations where machine-learning models are used to allocate scarce resources or opportunities, randomizing decisions in a structured way may lead to fairer outcomes.

In January 1977, five landmark health surveys, led by the famous Framingham Heart Study, reported a “striking” revelation about HDL cholesterol—a.k.a. the “good cholesterol.” The higher the HDL in a ...