I personally know 4 men with Parkinsons who have started LDN at my recommendation and all are doing better. Two since Jan 2007, the other two started in the past 2 months. The biggest improvement is in sleep quality, they are "sleeping like a baby". Also large reduction in PD medications.
NIH had a meeting 4/20/2007 where the discussed the research potential for LDN across many conditions, including PD.
A human trial has begun at UCSF for MS, and one is ongoing in Italy.
We are making progress!
SammyJo
http://LDNers.org