(((This isn't that weird an article; I mean Aubrey de Grey has been at it quite a while, mitochondria aren't a big secret and even Tim Leary was way into "life extension" before he died of old age... the weird thing is that the Economist is a
*business magazine.* Yeah, it's an *investment opportunity.*
Get in on the ground floor with the boosted soldiery and the biotech VCs.)))
Link: Abolishing ageing | How to live forever | Economist.com .
(...)
"Vision or mirage, Dr de Grey has defined the problem precisely. Unlike most workers in the field, he has an engineering background, and is thus ideally placed to look into the biological repair shop. As he sees things, ageing has seven components; deal with all seven, and you stop the process in its tracks. He refers to this approach as strategies for engineered negligible senescence (SENS).
"The seven sisters that Dr de Grey wishes to slaughter with SENS are cell loss, apoptosis-resistance (the tendency of cells to refuse to die when they are supposed to), gene mutations in the cell nucleus, gene mutations in the mitochondria (the cell's power-packs), the accumulation of junk inside cells, the accumulation of junk outside cells and the accumulation of inappropriate chemical links in the material that supports cells. (((Piece o' cake! Line 'em up and mow 'em down!)))
"It is quite a shopping list. But it does, at least, break the problem into manageable parts. It also suggests that multiple approaches to the question may be needed. Broadly, these are of two sorts: to manage the process of wear and tear to slow it down and mask its consequences, or to accept its inevitability and bring the body in for servicing at regular intervals to replace the worn-out parts.
"Eat up your greens
"Managing wear and tear may not be as complicated as it looks, for the last five items on Dr de Grey's list seem to be linked by a single word: oxidation. Regular visitors to the “health and beauty” sections of high-street pharmacies will, no doubt, have come across creams, pills and potions bearing the word antioxidant on their labels and hinting—though never, of course, explicitly saying—that they might possibly have rejuvenating effects. These products are the bastard children of a respectable idea about one of the chief causes of ageing: that one big source of bodily wear and tear, at least at the chemical level, is the activity of the mitochondria.
"Mitochondria are the places where sugar is broken down and reacted with oxygen to release the energy needed to power a cell. In a warm-blooded creature such as man, a lot of oxygen is involved in this process, and some of it goes absent without leave. Instead of reacting with carbon from the sugar to form carbon dioxide, it forms highly reactive molecules called free radicals. These go around oxidising—and thus damaging—other molecules, such as DNA and proteins, which causes all sorts of trouble. Clear up free radicals and their kin, and you will slow down the process of ageing..."
