There is no cure for Alzheimer’s and scientists don’t fully understand what causes this devastating form of dementia. But research shows that poor access to health care, lack of education, air pollution and other social and environmental factors leave people more vulnerable to the disease.
All these factors converge in the four counties that make up the Rio Grande Valley, a mostly rural, majority-Latino region where the infrastructure, education and health care systems suffer from decades of neglect. Medicare data shows that people here who are 65 and older are almost twice as likely to be diagnosed with dementia as people in that age group in most other parts of the country, according to the Centers for Medicare & Medicaid Services.

