A very informative book on the subject of gerontology or the study of aging [senescence]. The book is inundated with facts, some important but many of a trivial nature. and, therein, lies its biggest problem. The book reads more like a college text or a review in NATURE or SCIENCE than a narrative for general consumption. But let there be no doubt that the author is knowledgeable about his subject matter and has researched the area of discussion well.
For some background, the author begins with the premise that for all living species there is a trade-off between fertility and longevity, meaning the longer a species is expected to live the lower will be its fertility. As with humans who have a relatively long lifespan, females are normally expected to have one child at a time and for a relatively short period of their overall lifespan. As opposed to say insects, dogs or cats, who may lay hundreds or thousands of eggs for insects and have litters of 8 to twelve commonly for dogs and cats. Also the larger the animals mass the fewer offspring they NORMALLY have.
The author goes on to discuss mitochondria which are the key sites of free-radical formation [the types of things that anti-oxidant vitamins are supposed to help alleviate]. But the problem with mitochondria is that they developed as an invasive species of bacteria in cells several billion years ago. For their protection, they developed a protective barrier, so that the cell wouldn't kill them immediately. This is the reason that anti-oxidants don't work better than they do, as they can't pass through the mitochondrial layer.
Hormesis [the idea that even something that is bad for us taken or forced upon us in small doses that doesn't bring our demise will cause an organism to build up a tolerance or resistance to it and make the organism impervious or less likely to succumb to future insults from the same organism. This may be characterized in Fredrich Nietzsche's colloquy "What doesn't kill us, makes us stronger."
Some other interesting points were that centenarians are increasing in developing countries at a rate of approximately 7% annually versus an overall human lifespan increase of about 1% annually. It also seems that female centenarians outnumber male centenarians by a ratio of about 3 to 1. Another interesting point is that a lower body temperature and a decreased blood glucose level are two of the most important indicators of extended lifespans in humans.
However, the raison etre of the book is the discussion of resveratrol and calorie restricted diets [CR]. It seems that RESVERATROL is found in abundance in the skin of red grapes [think red wine for those oenophiles in the crowd]. It seems that it is one of the sirtuin boosters and the subject of much scientific study for the last seven years or so. The SIR of the word sirtuin stands for SILENT INFORMATION REGULATOR. It seems that there are several genetic variants of the Sirtis and the discussion gets bogged down IMHO about the founders of a company Sirtis which got bought out by Glaxo a few years ago for 720M, which seemed to be a minor focal point of the book. The background of the scientists involved, the various animal studies, and how this biological discovery was made takes up more time. You can buy resveratrol in some health food stores and on the internet. The biggest problem that I see with the pills commonly sold at present is that they are minuscule in dosage per kilogram of body-weight in comparison to what was used in the animal experiments. Therein lies the problem, in that the effects of resveratrol appear to be very much DOSAGE DEPENDENT.
There is much more to the story the author tells and about the discovery of resveratrol [it is not a drug as it is naturally produced in various vegetable matter] so can't be patented in its natural state as a drug. It can be patented if its form is changed slightly to supposedly make its action more efficacious.
I liked the information derived in the book, but I just felt it was filled with too much trivia and overly long. I think the scientifically minded will like it, but I do not think that most people wanting to sit down and read it in a couple of evenings are going to find the insight that they hoped to gain. It will take a little more research and understanding. But again, you won't know what you will gain if you don't read it.