Yes...while chlorine is found naturally in mushrooms, salt, and celery, it is not the same form of chlorine humans manufacture. The form we manufacture is not one we can metabolize easily (thus the reason why Splenda is called "no-calorie"---if we could metabolize it, it WOULD have calories) and because of our inability to completely break it down, some of the 15% we retain from the splenda is stored in our fat as a possible source of energy, much the way that some halucinogenic drugs are...this was addressed in one of the articles I listed.