Hi Dr Samuel,I have been masturbating regularly for almost 20 years and the past 5 years been doing it like 3 times a day,though I don't do it at all some months when am very busy at work. Recently,am having concern about my bones as it makes sound when i walk ,my ankles,fingers and even my hip bones crakes often and am thinking that this might be the cause of my excessive masturbation.I am 38years old,could this probably cause permanent damage to my bones as am very athletic and dances a lot.What food or medicine can you recommend for me?Thanks