Navigating through the morass of information relating to healthy life extension is a horrid process, especially if you are new to it all. Most of it is worthless, or even dangerous, put out by "anti-aging" groups trying to make money from products that don't work. It can take years to sort out the good from the bad, who to avoid and who to trust. This was one of the reasons for founding the Longevity Meme - to provide a better starting point. When doing your own research, Quackwatch is a good, solid, conservative resource.