Contrary to what earlier studies have found, a new study finds that men have a higher risk of developing memory problems than women.
Doctors should routinely screening teenagers for drug and alcohol use, and should use simple questions to figure out teens' level of use.
A nicotine patch helped people with mild cognitive impairment, which is an early sign of Alzheimer's disease, improve their scores on tests of memory and attention.
BPA exposure after a child was born had no affect on behavioral and emotional control, according to the study.
The researchers developed their ideas by looking at what types of thoughts distinguish happy people from people with depression.