Some chronic disease conditions (cancer, heart disease, etc.) also are thought to reduce the biosynthesis of and increase the demand for CoQ10 in the body, but there are no definite data to support these claims.
Ligeledes menes nogle kroniske sygdomme (fx kræft og hjertesygdom) at reducere biosyntesen og at øge behovet for CoQ10 i kroppen, men der findes endnu ikke entydige data, som beviser dette.