At this point I can recall reading starry eyed articles about future life extension technologies 10-15 years ago. My question is simple: what products have been

At this point I can recall reading starry eyed articles about future life extension technologies 10-15 years ago. My question is simple: what products have been brought to market that can be classified as "life extension" and are we certain they work? Is there actually anything out there yet which is as effective as good old diet and exercise?