We return to Healthy Longevity for Part 2 of our discussion about brain health with special guest neurologist Shelly Jordan, MD. In this segment, Drs. Comite and Jordan talk about inflammation in the brain, natural killer cells, the APOE4 gene variant, and advanced imaging techniques for predicting cognitive decline. Dr. Jordan also summarizes the practical steps you can take to optimize your brain power, including building muscle through resistance training, improving your sleep, managing your environment, even controlling the air you breathe, and avoiding ingesting microplastics that can make their way to the brain.