Every 3 seconds in the world someone develops dementia. Dementia is caused by damage to brain cells. Therefore, brain cells can no longer communicate with each other and the brain cannot carry out its regular functions. While the exact cause of it is unknown it could be caused by genes (and be inherited) , vascular issues (for example, stroke), brain injury (concussion), disease, or environmental factors.
Depending on the area of the brain damaged it could result in memory loss as well as problems in reasoning, attention, focus, speech, reading, talking, learning, thinking, personality and emotional issues and movement. Currently, there is no cure for dementia. However, a new study done at UCSF Memory and Aging Center has shown that lifestyle changes can slow the progression of dementia even in people with genetic predisposition for it. These lifestyle changes include a healthy diet, physical and mental exercises, and adequate sleep.