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  • Elizabeth Heller’s lab uncovers how drug addiction can create lasting changes in genes

    Leading a neuroepigenetics lab at her alma mater, Heller and the work of her 10-person lab is focused on molecular brain mechanisms, aiming to uncover chronic changes that can happen and keep happening in the brain long after exposure to addictive substances ends.

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  • Exposure to air pollution worsens Alzheimer’s disease
    Emissions from a power plant.

    Image: Pencho Chukov via Getty Images

    Exposure to air pollution worsens Alzheimer’s disease

    New research from Penn Medicine finds living in areas with high concentration of air pollution is associated with increased buildup of amyloid and tau proteins in the brains of Alzheimer’s patients, accelerating cognitive decline.

    Sep 9, 2025