Co Enzyme Q10 is concentrated in certain parts of the body where energy requirements are at their highest such as the brain liver & heart. Levels natuarally decline with age but its rapid depletion is a well known side effect for people taking choesterol lowering statin medication symptoms include general fatigue & muscle weakness. Benefits of Co Q 10 Cardiovascular disease a 75 reduction in the body rsquo s Co Q 10 level leads to the heart ceasing to function therefore it is import