A majority of Americans, more than five million, are living with Alzheimer's disease which influences various mental activities including learning and mental function, and disrupts memory, exposed the Alzheimer's Association. Further, the Chicago based advocacy organization has warned that by 2050, approximately 16 million Americans will have the disease.

Researchers have marked the head injuries as most responsible factor to double the risk of dementia among military veterans. The experts have reviewed medical records of around 281,540 veterans ages 55 and older and suggested that dementia risk was 15.3% among U. S. veterans who had sustained a traumatic brain injury whereas for those who did not suffered these trauma are less likely, 6.8% ,to suffer from the disease.

The Chief Medical and Scientific officer of the Alzheimer's Association, William Thies, claimed that soldiers increasingly suffer from serious head injuries as a result of changes in warfare technology.

"It's pretty conclusive that there is an association between serious head injury and dementia", stated Thies in an interview. "What we can anticipate is that in all those soldiers coming back from Iraq and Afghanistan, 20 years from now we are going to see a big increase in the amount of Alzheimer's that's going to develop".