Participants will be recruited in the Los Angeles area and randomly assigned to the 8-week Mindfulness-Based Stress Reduction (MBSR) intervention or to a wait-list. All participants will provide a blood sample and complete a psychosocial survey before and after the intervention, and complete a 60-minute neuroimaging assessment before and after the MBSR program. All participants who are randomly assigned to the wait-list will be offered the MBSR intervention after the 8-week intervention period and then complete an additional post-test assessment after completing the MBSR program (which will include a blood sample, psychosocial survey, and a neuroimaging assessment). Participants will complete neuroimaging tasks (where they will be presented with words, pictures, and sounds) before and after receiving the MBSR intervention, which will assess neural activity and regulation responses before and after mindfulness meditation training.