I totally agree that simply by virtue of living in a polluted world fighting off toxins will always be a daily ordeal. Until we get this planet cleaned up, that will never change.
I also agree with Vulc that having your liver & kidneys in good shape will make the difference between misery or relative comfort. My wife is doing some fasting with me and is suffering greatly. Because of chronic conditions in her past she's taken her share of pain relievers, which I'm sure has taken its toll on her liver. She'll have to proceed in short, frequent durations to gradually work it out of her.
I continue to be a proponent of apple pectin as a blood cleaner. Some drug users found it made a great way to cheat urine tests because of its efficacy in cleaning out the blood. We can make the same work for us (with a better cause).