Lear ways to change your lifestyle to help your brain and body stay healthy for a long and fruitful life. Currently, an estimated 50 million people worldwide are living with dementia, including more than 5 million Americans. Barring any developments in prevention or treatment methods, this number is projected to reach nearly 14 million by 2050. The disease also affects the 16 million Americans who provide unpaid care for people living with Alzheimer’s or another dementia. More than 80 percent of care provided at home is delivered by family members, friends or other unpaid caregivers. The Alzheimer’s Association® is available in communities nationwide and online to help individuals and families understand Alzheimer’s and dementia, navigate the disease and receive reliable information and support.