Are there any foods to lessen the diuretic effects of herbal teas?

The tea is not acting as a diuretic - you are dehydrated and increasing your fluid intake has allowed your body to start flushing itself through and getting rid of the aculated rubbish. If you drink two litres of water per day you will find that the excessive urination will stop in around two weeks. We are made of a high proportion of water and if you don't replace the water periodically and allowyour body to detox itself you will just become like a stagnant puddle.