There are some good heavy metal detox protocols on the internet. Don't know if you have cilantro in NZ but it is a great metal detoxer. I made a 'pesto' from cilantro leaves, lemon juice, garlic and olive oil. I put it on everything; morning eggs, sandwiches, pasta, etc. It pulls the metals out of your blood. But be careful not to do too strong a detox too soon as you you'll feel sick. If you can do it gently, it's better. I can think so much more clearly now since I got rid of the mercury from my system. It takes a while so be patient. btw, Zeolite clay is helpful too. Here's Dr Mercola's detox method: http://www.mercola.com/article/mercury/detox_protocol.htm