I think he is old enough to try to do some serious cleanses, especially at the colon and liver area - Threelac is working for him but it seems to me that it's just helping along or kind of covering the real problem... Let him read around, help him decide what he wants to do or willing to do for his own health - he is not a kid anymore but he will still need some guidance from you. Did you do cleanses yourself? I know you have been posting for quite a while... :)