It
 sounds like familiarity breeds better listening, or maybe none at all. A
 study involving middle-aged couples found that we’re better able to 
pick out the voice of our spouse in a crowd. On the other hand, people 
can more easily tune out that familiar voice when trying to hearing 
someone else talking. Source Link 
Good
 dental hygiene may be a hedge against Alzheimer’s disease. Researchers 
say the bacteria that causes gum disease has been found in the brains of
 Alzheimer’s victims. The oral bacteria which could damage brain tissue 
can enter the bloodstream during chewing. About two out of three older 
Americans have moderate or severe gum disease. Source Link
In
 order to grow their language skills, toddlers need to be part of the 
conversation. A new study found that talking directly to young children 
helps them process language better and build their vocabulary. Simply 
overhearing words does not improve speech processing skills as well as 
when talking directly with the child. Source Link  
