"his heart attack came from him taking grams of iodine"
that's hogwash, there is no causal relationship between Iodine
and heart attacks. Apparently, you're prone to blather incessantly, bombastic drivelings which you imagine. Mr. Trapper had already shared his situation, which in your apparent boredom, you have overlooked.
Moreover, Mr. Trapper did not write the book on iodine, it was in use 100 years before he,and you, were even born. Other readers may wish to look up PIMA syrup in the PDR and examine the grams-per-day amounts of it which are still prescribed today by licensed physicians.
Your reply to the original poster, from my perspective, did nothing to help them, and might be interpreted by some as having been calculated to un-necessarily instill fear. If that's the case, I think you've gone totally crackers.
In the event you want to come up to speed on iodine, I suggest you read all the articles in this link below, then and only then can we have a meaningful exchange: