As far as I know he has not taken any breaks. I will email him and see if I can get some more information, however he did say other family members who are not on Miracle-Mineral-Supplement seem to catch whatever "bug" happens to come through and he does not. As I have said many times, were it not for his credentials (and the fact I worked for him for a year in the early 1990's at his lab) Miracle-Mineral-Supplement would never have passed my lips on the word of Humble.
I understand very well what his unique position was in the pharmaceutical world and I know him as a dear and close friend.
I can assure you that with his many years as a Toxicologist, if he felt there were any long term adverse effects from Miracle-Mineral-Supplement he would not be taking it himself. He knows the chemistry involved and obviously is convinced of its effectiveness from a professional viewpoint as well and the observed effects regarding his own disease issues.