New Delhi, March 3 -- Alzheimer's disease is often associated with women, largely because they make up the majority of diagnosed cases but new research is shedding light on a critical difference: while more women develop Alzheimer's, men may experience a much faster decline once the disease takes hold.

A study published in Alzheimer's & Dementia revealed that men with early signs of Alzheimer's-marked by the buildup of amyloid plaques in the brain-showed steeper declines in brain health, cognitive function and key biological markers of the disease compared to women. In short, once Alzheimer's begins in men, it may progress at a more aggressive rate.

While past studies have focused on the overall prevalence of Alzheimer's in women versus...