Brain cells in Parkinson's disease exhaust themselves and die prematurely, burning out like an "overheating motor", an early study suggests.
Canadian researchers say the findings might help explain why only small parts of the brain are affected in the disease.
Read MoreEagerly awaited data on the most promising drug in treating Alzheimer's disease is set to be unveiled later.
Patients and scientists hope it could become the first medication to slow the pace of brain decline.
Read MoreThe way children sniff different aromas could form the basis of a test for autism, suggest researchers in Israel.
People spend longer inhaling the delightful aroma of a bouquet of roses than the foul stench of rotting fish.
Read MoreStudy finds widespread changes using specialized MRI
Read MoreResearchers did see mood improvement in women on oral treatment
Women taking menopausal hormone therapy to relieve symptoms such as hot flashes often hope it will also help their menopause-related memory and thinking problems, but a new study reports it won't.
Read MoreScientists say the MIND eating plan significantly reduces risk of the brain disorder
Read MoreTweaking the brain's immune system with a drug has prevented mice developing dementia, a study shows.
The team at Duke University, in the US, showed immune cells which start attacking nutrients in the brain may be a trigger for the disease.
Read MoreBeing overweight cuts the risk of dementia, according to the largest and most precise investigation into the relationship.
The researchers admit they were surprised by the findings, which run contrary to current health advice.
Read MoreA green tea habit is tied to a lower risk for dementia and mild declines in thinking and memory among older people, a new Japanese study shows. The piping-hot perk doesn't seem to apply to black tea or coffee, though, the researchers say.
Read MorePostmortem analysis of almost 1,400 brains implicates tau, not amyloid, buildup driving memory loss
Abnormal tau protein collecting in the brain may be the main cause of Alzheimer's disease, a new study claims.
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