Emerging evidence suggests beta-amyloid (Aβ) deposition in the Alzheimer’s disease (AD) brain is the result of impaired clearance, due in part to diminished Aβ transport across the blood–brain barrier (BBB). Recently, modulation of the cannabinoid system was shown to reduce Aβ brain levels and improve cognitive behavior in AD animal models.

via Role of the cannabinoid system in the transit of beta-amyloid across the blood–brain barrier.