Dear Pam: There are several potential disadvantages to fetal transplant: 1. Hemorrhage 2. Seizures 3. Rejection 4. Imunosuppression (if this is used) 5. Increased hallucinations / dementia and most importantly, most reports show only a modest (and temporary) improvement in symptoms. Fetal transplantation may prove an important treatment modality in the future, but it is premature to recommend them to patients in general. Tom ([log in to unmask])