This study examined coenzyme Q10 (CoQ10) deficiency in Parkinson’s disease (PD) patients compared to age- and gender-matched controls, revealing a significantly higher prevalence of CoQ10 deficiency in PD patients (32-36%) versus controls (8-9%), with odds ratios ranging from 4.7 to 5.4 (p=0.0012-0.006). CoQ10 plays a crucial role in mitochondrial function