What do you all think about supplementing with selenium? I know that here in New Zealand soils are generally deficient in selenium, so I've supplemented with it on and off for quite a long time. Initially I used a synthetic selenium and then moved to a whole food supplement. I was talking to someone recently who mentioned that selenium can be toxic if you get too much of it, so I felt unsure about it and stopped taking it. Cronometer tells me that I'm getting enough, but unfortunately because of the soils here the Cronometer's estimation of the selenium content of foods might not be accurate for New Zealand.