Coffee can improve Parkinson’s symptoms within three weeks compared to placebo, but do the benefits last? When James Parkinson described the classic symptoms of Parkinson’s disease, “he could hardly foresee the evolution of our understanding over the next two hundred years”—like the role of nutrition. High dietary intakes of animal fat, mercury, iron, and dairy products seem to increase Parkinson’s disease risk, while a plant-based dietary pattern and the intake of antioxidants may be protective. “Plant-based diets are known to preserve body tissues from oxidative stress and inflammation, both...