IN BRIEF (Page 19)

Brain aging can be reversed

Regular aerobic exercise can not only stave off the decline in brain function that often comes with age, it can also help turn back the clock on brain aging, two experts in the field report, based on a critical review of published studies. Age-related deterioration in the brain's all-important white and gray matter makes it harder to carry out a number of high-level "executive function" tasks, like planning, scheduling and multi-tasking, say Arthur F. Kramer and Kirk I. Erickson in the latest issue of the British Journal of Sports Medicine.

Whooping cough for adults