I have had mild high liver enzymes for 5 months and they just don't want to return to normal. I am eating only whole foods, moderately exercising completely cut out sugar, alcohol and anything bad from my diet. I have a sauna 4 times a week and switched out all shampoo etc to the non toxic variety. I am drinking a lot of water but it occurred to me that I hadn't changed my reverse osmosis filter for 5 years. Do you think this has anything to do with it? Can anyone give me some advice.