Coenzyme Q10 levels and survival: Molyneux and colleagues was the first to formally study the relationship between CoQ10 and outcomes of CHF in a longitudinal observational study which included 236 heart failure patients with a median age of 77 years. Plasma samples were analyzed for CoQ10 and other factors. Over the 5.75 year follow-up period, 39% of the participants who had CoQ10 levels lower than 0.63 micrograms per milliliter died, compared with only 22% of those whose levels were higher. This study also indicated that those with lower CoQ10 were 67% more likely to die. These findings suggested that CoQ10 levels are an independent predictor of survival in chronic heart failure patients. (19)
