Patient description: A 57-year old farmer was diagnosed with Parkinson's disease a year ago. He experiences slowness of movement and tremors. His past medical history is significant for hypertension and hypercholesterolemia. He lives with his wife. They have three children. He used to be active with planting and taking care of their farm animals before his diagnosis. The patient complains of shaking and slow movement. He had difficulty entering through a door, as he was frozen and needed guidance to step in. His handwriting is getting smaller. He is on Levodopa and Trihexyphenidyl. He stated his medications help with shaking and slow movement. But he still has difficulty initiating movements, stiffness and slowness in general. He is an alert and cooperative man who doesn't have any signs of dementia. He doesn't smoke or use any illicit drugs.

Clinical trial eligibility criteria: eligible ages (years): 20.0-55.0,  Fecal Microbiota Age between 20-55 y 2. BMI between 18.5-29.9 kg/m2 3. Bowel movement ≥3 times/wk 4. Consume ≥3 servings of fruits and vegetables daily on average 5. Willing to consume animal based diets for ≥10 days 6. Willing to consume freeze-dried whole cranberry powder 7. Willing to not take prebiotics and probiotics during the trial 8. Do not have allergic reaction to cranberries  Colonoscopy 2 mo prior to their enrollment or scheduled during the study 2. No antibiotic medications or drugs known to influence fecal microbiota were taken or used 3 mo before the study 3. History of a bilateral mastectomy 4. History of autoimmune disorders (rheumatoid arthritis, lupus, multiple sclerosis, vitiligo, psoriasis) 5. Consume <3 servings of fruits and vegetables daily one average 6. Gastrointestinal diseases, conditions, or medications influencing gastrointestinal absorption including active peptic ulcer disease or inflammatory bowel disease which will be found based on the self-report during the screening visit 7. Regular use of any acid-lowering medications (≥3 times/week) 8. Use of ≥14/wk serving of alcohol (168 oz beer, 56 oz wine, 14 oz hard liquor) 9. Intend to be pregnant, pregnancy, and breastfeeding 10. Infrequent (<3/wk) or excessive (>3/d) number of regular bowel movements 11. Active treatment for cancer (except non-melanom skin cancer) and cardiovascular disease of any type >1 y 12. Having diabetes and/or receiving medications for diabetic condition, which will be found based on the self-report during the screening visit 13. Thyroid disease unstable or medication adjustments in past 6 months, which will be found based on the self-report during the screening visit 14. Values of standard blood biochemistries are unacceptable for the study based on study physician's discretion 15. vegetarians and vegans, unwillingness or inability to consume animal-based foods including chicken, turkey, beef, eggs, cheese, other milk products, etc. Allergy to eggs or milk/dairy products. 16. Use anticoagulants, such as heparin, warfarin (coumadin) in past 6 months 17. On or planning to be on a weight loss regimen 18. Regular use of any dietary supplements containing vitamins, minerals, herbal or other plant-based preparations, fish oil supplements (including cod liver oil) or homeopathic remedies; however, subjects who are willing to refrain from the use of these supplements at enrollment and throughout the entire study may be considered eligible 19. Use of monoamine oxidase inhibitors (MAOIs) 20. Glomerular filtration rate (GFR) <60 mL/min/1.73 m2 21. Total cholesterol (TC) >250 mg/dL 22. Total triglycerides (TG) >300 mg/dL