Udarnik
Gold Meritorious Patron
Here's another article I found on his main premise, which he's been pounding on since 1999:
Do I think the cumulative lifetime effect of mitochondrial free radicals might have a place in a theory of aging? Sure. Is it even the major part? Probably not.
It's interesting to note that SENS still has his 1999 book on the subject on its website. I would not bother to read a 16 year old book on biology. A paper, yes. If it was a seminal one. But a book? That was in production for over a year, maybe 2, and references older material because of that? No way.
Most of my literature searches have a cutoff of 5 years. Sometimes 10, but rarely. Science moves faster than that, and the primary means to disseminate scientific thinking is the journal article, not books. Books take too long to produce. The review article is a much better way to communicate the current thinking in a broad subject.
The fact that they still have that book out (especially when the link between telomeres and aging was only a few years old and not well-accepted when it went to press) makes my Laffy-guru radar beep like crazy.
Since its inception more than four decades ago, the Mitochondrial Free Radical Theory of Aging (MFRTA) has served as a touchstone for research into the biology of aging. The MFRTA suggests that oxidative damage to cellular macromolecules caused by reactive oxygen species (ROS) originating from mitochondria accumulates in cells over an animal’s lifespan and eventually leads to the dysfunction and failure that characterizes aging. A central prediction of the theory is that the ability to ameliorate or slow this process should be associated with a slowed rate of aging and thus increased lifespan. A vast pool of data bearing on this idea has now been published. ROS production, ROS neutralization and macromolecule repair have all been extensively studied in the context of longevity. We review experimental evidence from comparisons between naturally long- or short-lived animal species, from calorie restricted animals, and from genetically modified animals and weigh the strength of results supporting the MFRTA. Viewed as a whole, the data accumulated from these studies have too often failed to support the theory. Excellent, well controlled studies from the past decade in particular have isolated ROS as an experimental variable and have shown no relationship between its production or neutralization and aging or longevity. Instead, a role for mitochondrial ROS as intracellular messengers involved in the regulation of some basic cellular processes, such as proliferation, differentiation and death, has emerged. If mitochondrial ROS are involved in the aging process, it seems very likely it will be via highly specific and regulated cellular processes and not through indiscriminate oxidative damage to macromolecules.
Do I think the cumulative lifetime effect of mitochondrial free radicals might have a place in a theory of aging? Sure. Is it even the major part? Probably not.
It's interesting to note that SENS still has his 1999 book on the subject on its website. I would not bother to read a 16 year old book on biology. A paper, yes. If it was a seminal one. But a book? That was in production for over a year, maybe 2, and references older material because of that? No way.
Most of my literature searches have a cutoff of 5 years. Sometimes 10, but rarely. Science moves faster than that, and the primary means to disseminate scientific thinking is the journal article, not books. Books take too long to produce. The review article is a much better way to communicate the current thinking in a broad subject.
The fact that they still have that book out (especially when the link between telomeres and aging was only a few years old and not well-accepted when it went to press) makes my Laffy-guru radar beep like crazy.
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