Several recent news stories highlight things you should know if you want to keep your brain healthy.

Killer Amoebas: The Associated Press warns, ”Killer amoebas living in lakes can enter the body through the nose and attack the brain, where they feed until you die.”

Sports: The New York Times reports that among high school athletes, girls are more susceptible to concussions than boys playing the same sports. Football, which attracts more male players, still has the highest rate of concussions in high school sports, though.

Conscientiousness: Reuters explains the findings of study published in Archives of General Psychiatry: “People who lead a good clean life — those who are conscientious, self-disciplined and scrupulous — appear to be less likely to develop Alzheimer’s disease.”