Migraines and dementia are among the most common neurological conditions across the world.
Sleep problems can appear in those with Alzheimer's before memory problems show, a scientist told Newsweek.
The test could be available to doctors in a couple of years, and may help speed up the creation of treatments.
"By losing weight, people may be able to stave off aging of their brains and potentially the memory and thinking problems that can come along with brain aging," an author of a new study has said.
"Many people may be able to achieve the levels of activity seen here without major changes to their schedules," the co-author of the study told Newsweek.
How to live out your very own "Inception."
Getting proteins from plants seems to be the best way to control cholesterol levels, a professor of medicine told Newsweek.
Not all drug development needs to start from scratch. Sometimes researchers discover that a drug developed for one disease can be used for another.
Scientists studied 800 women for their research.
Experts fear dangerous, invisible particles damage the brains of humans and animals.
Despite a string of failed clinical trials for new dementia drugs, there are reasons to remain optimistic.
Researchers studied over 100,000 people to find the risk factors for dementia.
Scientists studied thousands of elderly people in New York City to arrive at their conclusion.
As dementia affects a person's ability to communicate, managing pain can be particularly difficult.
Researchers believe the levels of estrogen which the body creates during pregnancy could explain this association.
Living closer to green spaces appears to have a positive affect on a person's brain health.
Tangles in the brain are believed to be a sign of Alzheimer's disease.
Having high levels of body fat and low muscle mass could pose a double threat to cognitive health, scientists fear.
Researchers found aspirin appeared to stimulate a part of the cells that clear debris in mice brains.
Researchers investigated the link between junk foods, ageing and markers of Alzheimer's disease in the brain.
Scientists investigated cells known as microglia, which are believed to play a role in the development of dementia.
Researchers have presented a revised version of their study into the much-lauded diet.
Growing evidence suggests there is a link between how much we sleep and our risk of developing dementia.
Evidence suggests that diabetes drugs might be an effective treatment for Alzheimer's patients.
Researchers believe alcohol impedes cells in the brain from clearing plaque linked to the development of Alzheimer's disease.
The findings highlight the importance of catching symptoms of cognitive decline early, experts said.