Name-calling and insults - key moments from Biden and Trump’s first presidential debate Age and mental fitness recently have become a leading issue in the US presidential race. While the issue has ...

A study investigating the effect of sleep on brain performance has found a link between an individual’s preference for morning or evening activity and their brain function, suggesting that ...

Trump weighed in on the conversation about his health on Jan. 2, saying his doctors have "just reported" that he nailed a ...