From the Immortality Institute: "Five years ago began one of the most interesting collaborative research projects in the anti-aging field. The concept was bioremediation of indigestible metabolic byproducts in order to improve the health and functioning of human cells. It is well known that these byproducts are prevalent in cases of Alzheimer's (amyloid beta and tau proteins) and heart disease (7 ketocholesterol) among many other age-related diseases. For whatever evolutionary reason, the human body does not produce enzymes to break down this 'junk'. Aubrey de Grey of the SENS Foundation theorized that out in the wilds of nature there must be some bacteria that break down this junk. ... The SENS Foundation put out a call around the world for interested longevity-minded people to send in soil samples. Immortality Institute members responded, enthusiastically sending in hundreds of samples from gardens, forests, deserts, and swamps. The tale of cooperation and outreach is preserved in this Imminst forum. The research was also the subject of an Imminst Sunday Evening Chat in 2007. ... Since the call went out, researcher John Schloendorn and several other Immortality Institute members [have] been testing the soil samples for bacterial enzymes that could break down the plaques and other junk. A multitude of bacteria were tested on the various types of cellular and extra-cellular junk to see which ones would thrive. Several bacteria were up to the job."