Here is a search I created a couple of days ago.
http://search.lef.org/search/default.aspx?s=1&QUERY=k12
Today another entry turned up (I'm pretty sure it wasn't there on Wednesday) under the article section.
It comes from their 'Life Extension Magazine July 2009'. I presume that this might be the same as the print version that Oman mentioned?
Here is the link to the first page of the article. There are two pages, and clinking on the link from the search will take you to the second page...
http://www.lef.org/magazine/mag2009/...iseases_01.htm
On the second page the string 'K12' shows up 15 times.
There are 63 references cited in the article. This is an article with credibility me thinks. So yes, I think LEF have implicitly endorsed K12's efficacy.