Yes, but he still admits it can occur. He just doesn't think it's significant. But there are those who do notice it's a problem. For me it was also. I used DMSA a couple of years back at 50 mg, every 4 hours. I was admittedly not on a yeast protocol at the time, but that was enough to cause me a real issue and I had to go on the candida diet, due to the gut problem that resulted.

So, maybe sugar was more the problem, but the chelating agents didn't help.