The Mediterranean diet reduces the risk of PD with favorable alternations of intestinal microbiota, increases levels of SCFAs, and reduces the TMAO level. Calorie restriction and Fasting-mimicking diet show some neuroprotective effects on PD via increasing β-HB, FGF21, and Ghrelin levels. Meanwhile, both ketogenic and protein-restricted diets show a striking effect on ameliorating motor impairment and fluctuations. Conversely, Western diet correlates with an increased incidence of PD and exacerbates the severity of PD with unfavorable changes of intestinal microbiome and increases neuroinflammation. Clarifying these roles of dietary patterns in PD will be meaningful for future personalized-dietary interventions in patients with PD. CLICK TO REVIEW