I recently posted on my blog a summary plus a link to an audio interview with a leading curcumin researcher at Baylor University who discusses the latest research on this and recommends using curcumin BCM-95 as being the best version with enhanced bioavailabity to cross the BBB. I apparently can't submit a link with this post but if you Google "parkinson's schappi curcumin bcm-95" you should be able to find it.