a little more supporting info... http://lpi.oregonstate.edu/infocenter/o ... deficiency
Humans can endogenously synthesize ubiquinones; therefore, coenzyme Q10 is not an essential nutrient. ... Symptoms of coenzyme Q10 deficiency have not been reported in the general population, so it is generally assumed that normal biosynthesis and a varied diet provides sufficient coenzyme Q10 for healthy individuals (6). It has been estimated that dietary consumption contributes about 25% of plasma coenzyme Q10, but there are currently no specific dietary intake recommendations for coenzyme Q10 from the Institute of Medicine or other agencies (7).http://www.whfoods.com/genpage.php?tnam ... t&dbid=118
Food concentrations of coenzyme Q are not well documented. In general, however, coenzyme Q is available from three basic types of foods: (1) fish; (2) organ meats, including liver, kidney and heart; and (3) the germs of whole grains.
The most concentrated sources of coenzyme Q — like heart or kidney — contain about 2-3 milligrams of coenzyme Q per ounce of heart or kidney. The germs of grains, while containing less coenzyme Q per ounce, also contain vitamin E in amounts of 5-10 IU per ounce, and this vitamin E works together with coenzyme Q in the body.
The endogenous synthesis of CoQ10 happens to be a very complex process requiring numerous vitamins such as vitamin B6, vitamin B12, [vitamin B9, vitamin B3, vitamin B5] and vitamin C, and also certain trace elements. ... Thus the production of CoQ10 is dependent on an adequate supply of numerous precursors and cofactors, and a deficiency of one or more of these essential components can adversely affect the production of adequate amounts of CoQ10. http://en.wikipedia.org/wiki/Ubiquinol
The mevalonate pathway (also known as the HMG-CoA reductase pathway) is an important metabolic pathway responsible for producing a diverse array of cellular products, including cholesterol and CoQ10 forms ubiquinone and ubiquinol. Statin medication targets inhibition of the mevalonate pathway to decrease cholesterol biosynthesis, however a consequence of their utilization is a depletion of CoQ10. Statins do not block all cholesterol production in the body. Similarly CoQ10 levels are not lowered completely. Nevertheless even a slight drop in CoQ10 levels can have a host of effects, some of which are not evident for years or even decades.