Health

Engaging in activities that maintain cardiovascular health, such as exercising and eating a healthy diet, may lower dementia risk, especially in people whose genes put them at higher risk.

The shutdown measures implemented by China in February 2020 to curb the spread of COVID-19 caused a substantial drop in some types of air pollution (nitrogen dioxide), but not others (aerosols and cloud properties).

COVID-19 may have been in the United States as early as December 2019, prior to clinical awareness and testing capabilities.

Health

Black American COVID-19 patients have an 81% greater risk of needing a ventilator and 36% greater risk of death than white patients. This gap widens with age, which may reflect the health burden of discrimination and racism.

Journal of the National Medical Association

Health

Ultraviolet radiation from sunlight on clear days contributes to inactivating SARS-CoV-2 (the virus responsible for COVID-19) on surfaces.

Health

In the United States, primary and secondary school closures generally reduced both cases and deaths from COVID-19 by roughly 60%.

Health

The use of sodium supplements, such as salt tablets or electrolytes, did not help ultramarathon runners maintain a healthy sodium balance in hot race climates.

Procrastinating studying for exams by going on Facebook made anxiety worse for undergraduate students.

Masks should contain multiple layers of cloth (at least 2-3) to prevent spread of COVID-19, although a single-layer face covering is better than nothing.

Health

More dependence on GPS was associated with using spatial memory strategies less often and less effectively when navigating. Habitual use of GPS might impair spatial memory.

Scientific Reports