Healthy plant-rich foods once again prove how beneficial they are to our diet and to our overall health, especially for Parkinson’s patients. A randomized controlled trial was conducted with 40 people using a personalized, plant-rich, time-restricted diet based on the Ketoflex 12/3 diet for 6 months. The study published in the Journal of Parkinson’s Disease, “A personalized plant-rich, time-restricted nutritional intervention for motor and non-motor symptoms in Parkinson’s disease: A randomized controlled trial,” examined how targeted nutrition and eating schedules could influence both physical and emotional symptoms. Researchers found that participants who followed the program showed meaningful improvements in movement, daily functioning, motivation, and gut health, highlighting the potential of diet as a powerful tool in managing Parkinson’s disease.
Ketoflex consists of most plant-based, low-sugar foods, healthy fats, and moderate protein intake while limiting processed foods and refined carbohydrates. People on this plan eat within a certain time each day, fasting for at least 12 hours overnight and stopping food at least 3 hours before bedtime. Participants followed a diet that combined mostly plant-based, low-glycemic foods, low carbs, and metabolic flexibility (your body’s ability to efficiently switch between burning sugar and fat depending on your needs). All ultra-processed foods, and inflammatory foods(foods with added sugars and sweets, and processed meats, deep fried foods, white bread, white pasta, white rice, excess saturated & trans fats were also eliminated from the study.
Each of the 40 participants underwent regular nutritional counseling, and their diet was a personalized plan that fit their specific health needs based on each person’s body type, including inflammatory, insulin-resistant, toxin-related, or blood vessel–related patterns. Results of the study showed significant improvements in motor symptoms for those in the intervention group, while the control group slightly worsened. There were marked improvements in doing daily tasks like dressing, cooking, shopping, and managing the household. Scores in apathy and motivation also improved with more personal engagement, taking more of an interest in participating in daily life and activities, feeling less emotionally “flat,” and a willingness to socialize, exercise, and manage daily responsibilities. These changes support the researchers’ theory that improving metabolism and brain energy can help stabilize dopamine-related circuits that influence mood, drive, and behavior, not just movement.
Gut function improved, with less constipation, more regular bowel movements, and less discomfort, indicating a healthier digestion thanks to the plant-rich and time-based eating plan that likely supports better gut bacteria and intestinal movement.
The study found that participants with high levels of inflammation benefited the most. This group showed the greatest gains in motor skills and daily functioning, suggesting that the diet may be especially effective for those with inflammation-driven Parkinson’s.
For the researchers, the results of the study show that plant-based foods and an eating schedule made improvements in the brain and body’s basic energy systems, improving mitochondrial function (energy production), lowering inflammation, and repairing the gut microbiome by feeding healthy bacteria with fiber and polyphenols. They also found an increased level of BDNF, Brain-Derived Neurotrophic Factor. It’s a protein that acts like fertilizer for your brain cells. It supports learning and memory, improves motivation and mood, grows new neurons, and strengthens connections between your brain cells. Fasting also clears damaged cells.
The results of the study will no doubt have people pointing out that healthier diets with less fat and processed foods are the way to go, and that, for Americans at least, need to make more of a move away from fast foods, sugary drinks, and packaged meals that increased the waistlines of millions of people in their pursuit of a faster pace of life.
However, the study does have limitations. No biological markers were measured, dietary adherence was self-reported, meals were not standardized, and weight changes were not tracked.
For Parkinson’s patients, this provides another tool in their arsenal of weapons against the disease. Combining the Keto plan described in the study, along with exercise regimens like Rock Steady or other cardiovascular programs, may be significant in having reduced symptoms and improving lifestyle.

All media by Chris Denny/Adobe


