Ambient and household air pollution was tied to an increase in a marker of atherosclerosis (the narrowing and weakening of blood vessels), which is a precursor to cardiovascular disease.

People undergoing coronary angiograms with higher levels of omega-3 metabolites in the blood had reduced risk of heart attack, stroke, heart failure, or death, while not increasing prostate cancer risk.

People who improved their fitness level from poor to good status over the 30-year study cut their risk of dementia by half. Those with best fitness had a 40% reduced risk of developing dementia.

Researchers transplanted gut microbes from old mice into young, germ-free mice; the young mice had increased intestinal growth, neurogenesis, and butyrate production, a fatty acid associated with longevity.