Short-term infection could create conditions for long-term intestinal illness, a study suggests. (p. 14)

Cartilage, the shock absorber of the body, has been bearing the brunt of a modern lifestyle. This nerveless connective tissue allows bone to glide over bone without any repercussions — most of the time. But human cartilage evolved in an earlier age, in ancestors who lived shorter lives, carried less body weight and roamed an unpaved world. Nowadays, cartilage takes a constant and prolonged beating from which it has poor capacity to bounce back. It’s not a good scenario for an aging population. As the go-between tissue in joints, cartilage can handle only so many jolts and jars before som... (p. 22)