To be honest it shouldn't really be a running story. It would need to be a science story, as to give any insight it would need to be substance plus exercise and the outcome of the combination of those over a balanced group to provide any real detail.
Given the deadline is tomorrow night I expect this is nothing more than a Dave from London said "SIS gels gave me the trots". Science journalism has always been poor, mostly as the time it takes to get the actual facts from the story tend not to be sensationalist and take an age to gather.
If you really want to see what substances do and report anything with meaning you'd need to look at academic and scientific journals.
Edited: 30/01/2013 at 20:00