adult age data of human subject older adult data of human subject (by NIH) For the purposes of the NIH Policy and Guidelines on the Inclusion of Individuals Across the Lifespan as Participants in Research Involving Human Subjects, an older adult is defined as an individual 65 years of age or older. https://nexus.od.nih.gov/all/2018/08/07/human-subjects-and-clinical-trial-glossary-updates/ Oliver He, Jie Zheng, Anthony Huffman older adult human subject