Dr. Aggarwal works with many community based and national organizations promoting ways to ensure that positive lifestyle changes lead to better cognitive and physical health across the aging continuum. She is a cognitive neurologist, with particular interest in dementia and Alzheimer's disease, and conducts original research in a variety of large scale community based studies in Chicago. She serves as the senior examining neurologist for the community based minority studies at the RADC, a position that she has held for over 15 years. She also represents RUSH, as the Steering Committee member for the Alzheimer's Disease Cooperative Study Group, a group that develops clinical trials to prevent and slow down the progression of Alzheimer's disease and is the Clinical Core Co-Leader of the RUSH Alzheimer's Disease Center's federally funded Clinical Core. She presently, serves as a Board member for multiple organizations, including the Sex and Gender Women's Health Collaborative, the American Medical Women's Association, the West Side Institute for Science and Education at the Jesse Brown VA, Building a Healthier Chicago and Arogya World.