What else lowers your Glutathione in your brain? Your Brain's Master Shield When it drops, the bloodbrain barrier weakens and neurons are left exposed. Here's what silently drains it: Stress & Researchers found that chewing firm foods like raw carrots, celery, apples, or nuts can raise brain glutathione within minutes. This master antioxidant protects neurons from oxidative stress and enhances memory and focus. An Open Label Case Series of Glutathione Use for Symptomatic Management in Children with Autism Spectrum Disorder Genetic overexpression of glutathione peroxidase 1 attenuates microcystin leucine arginine induced memory impairment in mice ScienceDirect