For many, minor memory loss, sometimes referred to as a senior moment, is a normal part of aging. However, more significant memory loss that disrupts your life can be an early sign of dementia. Older adults are at risk for dementia and both the prevalence and incidence of dementia grow with increasing age. Though 3% of older adults between 65 and 69 years of age have evidence of dementia, 35% of those 90 years of age and older have dementia.