Muscle loss linked to 42% higher dementia risk, Australian study finds

Australian researchers found that muscle condition, not just body weight, is critical for memory health in older age. A large analysis linked sarcopenia to a 42% increased risk of developing dementia. The Curtin University study reviewed over 80 global papers. Lead author Dr. Uraiporn Buranasuksakul urged shifting focus from kilograms to preserving muscle strength and function, calling sudden muscle loss a key warning sign for cognitive decline. Fat tissue's effect on the brain varied by age: obesity raised dementia risk by 9% before 65, but lowered it by 17% after 65. Experts warn against intentional weight gain, noting the relationship is complex. Regular exercise, protein intake, and balance remain the best protection.