The present invention provides compositions and methods useful for treating and preventing neurodegenerative disease and neurologically related disorders by inhibition of Lp-PLA2. The compositions and methods are useful for treating and preventing diseases and disorders with abnormal blood brain barrier (BBB) function, for example neurodegenerative diseases with a permeable BBB, such as but not limited to, Alzheimers Disease, Huntingtons Disease, Parkinsons Disease and Vascular Dementia.