The National Institutes of Health (NIH), through the National Institute on Aging (NIA), invites applications for the NIA Program Project Grants (P01), which focus on aging-related research. This funding opportunity aims to support synergistic projects that encompass at least three related research endeavors centered on the aging process, associated diseases, and the needs of older Americans, requiring a central administrative core and relevant research projects. The initiative is critical for advancing scientific knowledge regarding aging and addressing public health challenges impacting older adults. Interested applicants must submit their proposals by September 7, 2025, and can find additional information and application instructions at http://grants.nih.gov/grants/guide/pa-files/PAR-22-130.html. For inquiries, contact the NIH OER Webmaster at OERWebmaster03@od.nih.gov.