Inclusion Criteria:  Willing and able to give informed consent.  Willingness and ability to comply with study requirements. PD diagnosis must be confirmed by bradykinesia plus one of the other cardinal signs (resting tremor, rigidity, postural instability) being present. Age >30 years Men and women with mild to moderate PD: Hoehn and Yahr scale stages 1 - 3. Participants may be on current therapeutic agents (including levodopa, dopamine agonists, anticholinergics, amantadine or selegiline) to treat PD symptoms at the time of enrollment and may remain on these agents throughout the 5-month study period. Women of childbearing potential (i.e., those not postmenopausal or surgically sterile) may participate provided that they are using adequate birth control methods for the duration of the study. Women of childbearing potential must have a negative pregnancy test at baseline and be non-lactating.  Exclusion Criteria:  • Subjects with advanced, severe disease, including those with dementia, severe osteoarthritis, allergies, stroke, and visual impairment.  Presence of atypical PD syndromes due to drugs (e.g., metoclopramide, flunarizine), metabolic identified neurogenetic disorders (e.g., Wilson's disease), encephalitis, or other degenerative diseases (e.g., progressive supranuclear palsy). Any clinically significant medical condition (e.g., active neoplasm, angina) or laboratory abnormality, which would in the judgement of the investigator interfere with the subjects' ability to participate in the study or be followed