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Study: Even mid-life diet change can extend life
Study: Even mid-life diet change can extend life
WASHINGTON (AP) --It has long been known that laboratory animals live longer on a low-calorie diet. Now a study suggests that even if sensible eating is delayed until middle age, health can be improved and life extended. A study on diet and life in the journal Science dealt only with laboratory fruit flies, but researchers said some of the same effects may apply to mammals, perhaps even humans. In the study, British researchers compared the effects of different calorie-restricted diets on the mortality of fruit flies. They found that fruit flies on restricted diets lived about 90 days, twice as long as those fed on a normal diet. But the scientists also found that when heavily fed fruit flies were switched at middle age -- day 14 to 22 -- to leaner diets, then the animals converted from the shorter life pattern of the overfed to the longer-lived pattern of flies that had been on a restricted diet all their lives. The carry-home message from the study, said Linda Partridge of University College London is that it is never too late to improve health by switching to sensible eating habits. "If this works in humans, then it means that from the time a person starts on a restricted diet, they'll be like individuals of the same age who were always on that diet," she said. "Their prospects of survival are the same." Partridge said that although the life-extending effects of short rations have never been proven in humans, it has been shown in monkeys, mice, rats and fruit flies that diet restrictions will lead to longer lives. "There is no reason to suppose it wouldn't apply equally to humans," she said. "There are diet restriction studies now underway with monkeys and all the indications appear the same [as with mice, rats and fruit flies]." James R. Carey, a University of California, Davis, researcher who studies the biology of aging, said the Partridge study is "important to the field," but does not provide final answers about the true effects of restricted diets. He said that fruit flies and other animals on restricted diets tend to stop reproducing. In mammals, for instance, the females stop ovulating and, hence, cannot reproduce. As a result, Carey said, animals on restricted diets may live longer simply because they are not expending energy and stress in the rigors of reproduction. He said studies still need to specifically isolate and prove that it is the lean diet alone that leads to longer life, and not related factors. -- Steve º¤º°`°º¤ø,¸¸,ø¤º°`°º¤º Steve Chaney Remove "Vegetus." to get my real email address See the soc.singles HALL OF STUPID: http://member.newsguy.com/~gunhed/hallofstupid "If only sheep could cook, we wouldn't need women at all! 8)" - Dizzy, Message-ID: "Outside of this group, I don't remember hearing anyone in RL say that fat people are worthless." - some anonymous coward admitting the truth, Message-ID: "I watched The Accused last night with Jodie Foster. Tough movie. I was wondering what people felt as to whether or not they feel she deserved what happened to her." - Brenda Lee Ehmka, Message-ID: "Jade, your whole existence is spent trying to find people you can justify vetting your rage toward thorugh all forms of harassment. Do you realize that?" - Sunny, on Jade's life in a nutshell |
#2
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Study: Even mid-life diet change can extend life
My dad is heading towards his 99th birthday still living independently at
home. He's been restricting calories, fat, salt, and sugar since the early 1960s. He walked 3 miles every day but that was all the exercise he took. He only retired from his profession in his 90s when his vision started to fail. All his many siblings died of heart disease in their 60s and 70s. Dietary restriction worked very well for him. OTOH, living on a diet of Special K, skim milk, cottage cheese, yogurt, and a tiny serving of meat and frozen veg day in and day out for fifty years isn't for everyone. Certainly not me! -- Jenny 168.5/137 Low Carb 9/1998 - 8/2001 and 11/10/02 - Now http://www.geocities.com/jenny_the_bean How to calculate your need for protein * How much people really lose each month * Water Weight Gain & Loss * The "Two Gram Cure" for Hunger Cravings * Characteristics of Successful Dieters * Indispensible Low Carb Treats * Should You Count that Low Impact Carb? * Curing Ketobreath * Exercise Starting from Zero * NEW! Do Starch Blockers Work? "Steve Chaney, aka Papa Gunnykins ®" wrote in message ... Study: Even mid-life diet change can extend life WASHINGTON (AP) --It has long been known that laboratory animals live longer on a low-calorie diet. Now a study suggests that even if sensible eating is delayed until middle age, health can be improved and life extended. A study on diet and life in the journal Science dealt only with laboratory fruit flies, but researchers said some of the same effects may apply to mammals, perhaps even humans. In the study, British researchers compared the effects of different calorie-restricted diets on the mortality of fruit flies. They found that fruit flies on restricted diets lived about 90 days, twice as long as those fed on a normal diet. But the scientists also found that when heavily fed fruit flies were switched at middle age -- day 14 to 22 -- to leaner diets, then the animals converted from the shorter life pattern of the overfed to the longer-lived pattern of flies that had been on a restricted diet all their lives. The carry-home message from the study, said Linda Partridge of University College London is that it is never too late to improve health by switching to sensible eating habits. "If this works in humans, then it means that from the time a person starts on a restricted diet, they'll be like individuals of the same age who were always on that diet," she said. "Their prospects of survival are the same." Partridge said that although the life-extending effects of short rations have never been proven in humans, it has been shown in monkeys, mice, rats and fruit flies that diet restrictions will lead to longer lives. "There is no reason to suppose it wouldn't apply equally to humans," she said. "There are diet restriction studies now underway with monkeys and all the indications appear the same [as with mice, rats and fruit flies]." James R. Carey, a University of California, Davis, researcher who studies the biology of aging, said the Partridge study is "important to the field," but does not provide final answers about the true effects of restricted diets. He said that fruit flies and other animals on restricted diets tend to stop reproducing. In mammals, for instance, the females stop ovulating and, hence, cannot reproduce. As a result, Carey said, animals on restricted diets may live longer simply because they are not expending energy and stress in the rigors of reproduction. He said studies still need to specifically isolate and prove that it is the lean diet alone that leads to longer life, and not related factors. -- Steve º¤º°`°º¤ø,¸¸,ø¤º°`°º¤º Steve Chaney Remove "Vegetus." to get my real email address See the soc.singles HALL OF STUPID: http://member.newsguy.com/~gunhed/hallofstupid "If only sheep could cook, we wouldn't need women at all! 8)" - Dizzy, Message-ID: "Outside of this group, I don't remember hearing anyone in RL say that fat people are worthless." - some anonymous coward admitting the truth, Message-ID: "I watched The Accused last night with Jodie Foster. Tough movie. I was wondering what people felt as to whether or not they feel she deserved what happened to her." - Brenda Lee Ehmka, Message-ID: "Jade, your whole existence is spent trying to find people you can justify vetting your rage toward thorugh all forms of harassment. Do you realize that?" - Sunny, on Jade's life in a nutshell |
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Study: Even mid-life diet change can extend life
(Steve Chaney, aka Papa Gunnykins ®) wrote in message ...
Study: Even mid-life diet change can extend life WASHINGTON (AP) --It has long been known that laboratory animals live longer on a low-calorie diet. Now a study suggests that even if sensible eating is delayed until middle age, health can be improved and life extended. [...] The carry-home message from the study, said Linda Partridge of University College London is that it is never too late to improve health by switching to sensible eating habits. Another carry-home message from the study is that if you want to restrict the food intake of a living animal to such a degree, you first have to restrict that animal to a cage. "If this works in humans, then it means that from the time a person starts on a restricted diet, they'll be like individuals of the same age who were always on that diet," she said. "Their prospects of survival are the same." Most humans do not live in cages. Therefore the studies on caged animals fail to control for one obvious variable which differs for people. Maybe the effect of dietary restriction is different for captive animals, somehow. It would be extremely difficult to regulate the food intake of free-ranging animals. I wonder if anybody has tried? Partridge said that although the life-extending effects of short rations have never been proven in humans, And the question is why not? I've been reading about the life-extending effects of short rations in caged animals about as far back as I can remember. I remember hearing about this when I was in college, and at the time I already knew it was old news. Enough decades have passed since the calorie-restricted diet news broke for someone to have tested the diet in humans. One problem is that according to Scientific American magazine, fewer than 1 in 1000 people have the self-control necessary to remain on the diet voluntarily. Evidently zero out of 1000 animals have such self-control, which is why you have to cage animals before you can get them to undereat to this degree. it has been shown in monkeys, mice, rats and fruit flies that diet restrictions will lead to longer lives. The cosmetic effects of such a diet are interesting. Check out the photo of Michael Cooper in this article: http://www.sciam.com/article.cfm?art...88EF21&catID=2 Few women would find such a chronically underfed man ideally attractive, which just goes to show SEXUAL ATTRACTION IS NOT SOLELY ABOUT DESIRING MAXIMALLY HEALTHY PARTNERS. Of course if we believe the claims of fat acceptors, many of them would become even more obese on this diet. "There is no reason to suppose it wouldn't apply equally to humans," Actually there is. Some of these experiments show a doubling of the MAXIMUM lifespan for a particular species. In humans that would correspond to living more than 200 years. There are probably reasons to suppose humans cannot live to 200 years solely by restricting their calorie intake. she said. "There are diet restriction studies now underway with monkeys and all the indications appear the same [as with mice, rats and fruit flies]." All the indications are that no uncaged animal will voluntarily stay on such a diet for long. The degree of calorie restriction on this diet is about what would result in the diagnosis of an eating disorder. James R. Carey, a University of California, Davis, researcher who studies the biology of aging, said the Partridge study is "important to the field," but does not provide final answers about the true effects of restricted diets. He said that fruit flies and other animals on restricted diets tend to stop reproducing. In mammals, for instance, the females stop ovulating and, hence, cannot reproduce. As a result, Carey said, animals on restricted diets may live longer simply because they are not expending energy and stress in the rigors of reproduction. I wonder what Carey means by "simply." The molecular mechanisms he's lumping into the word "stress" are so complicated that nobody has explained them all yet. Being locked in a cage and fed less than you want is probably pretty stressful, too. Most prisoners of war who have had that experience never want to feel hungry again. He said studies still need to specifically isolate and prove that it is the lean diet alone that leads to longer life, and not related factors. Someone needs to explain in mechanistic detail (that is, down to the molecular level) exactly what aging is. We can see some of the large-scale indications of aging, but until someone can explain all the molecular rearrangements that cause the large-scale effects it will be hard to know what the experiments are showing. -- the Danimal |
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Study: Even mid-life diet change can extend life
Well, for starters, watching my dad outlive all their friends and his eyes
and ears has not motivated me to want to live to be quite that old. Plus, unlike my dad, I enjoy food enough that I'm not willing to basically give it up for fifty years. That said, I have been getting by this past year on a diet that is only about 2/3s of what the nutritionists seem to think should be maintenance and I have no plans to up my calories ever. -- Jenny 168.5/137 Low Carb 9/1998 - 8/2001 and 11/10/02 - Now http://www.geocities.com/jenny_the_bean How to calculate your need for protein * How much people really lose each month * Water Weight Gain & Loss * The "Two Gram Cure" for Hunger Cravings * Characteristics of Successful Dieters * Indispensible Low Carb Treats * Should You Count that Low Impact Carb? * Curing Ketobreath * Exercise Starting from Zero * NEW! Do Starch Blockers Work? "Ignoramus21054" wrote in message ... In article , Jenny wrote: My dad is heading towards his 99th birthday still living independently at home. He's been restricting calories, fat, salt, and sugar since the early 1960s. He walked 3 miles every day but that was all the exercise he took. He only retired from his profession in his 90s when his vision started to fail. All his many siblings died of heart disease in their 60s and 70s. Dietary restriction worked very well for him. OTOH, living on a diet of Special K, skim milk, cottage cheese, yogurt, and a tiny serving of meat and frozen veg day in and day out for fifty years isn't for everyone. Certainly not me! Amazing stuff. I cannot help but note that your dad's diet has nothing to do with the diet that you follow!!! i 168.5/137 Low Carb 9/1998 - 8/2001 and 11/10/02 - Now http://www.geocities.com/jenny_the_bean How to calculate your need for protein * How much people really lose each month * Water Weight Gain & Loss * The "Two Gram Cure" for Hunger Cravings * Characteristics of Successful Dieters * Indispensible Low Carb Treats * Should You Count that Low Impact Carb? * Curing Ketobreath * Exercise Starting from Zero * NEW! Do Starch Blockers Work? "Steve Chaney, aka Papa Gunnykins ®" wrote in message ... Study: Even mid-life diet change can extend life WASHINGTON (AP) --It has long been known that laboratory animals live longer on a low-calorie diet. Now a study suggests that even if sensible eating is delayed until middle age, health can be improved and life extended. A study on diet and life in the journal Science dealt only with laboratory fruit flies, but researchers said some of the same effects may apply to mammals, perhaps even humans. In the study, British researchers compared the effects of different calorie-restricted diets on the mortality of fruit flies. They found that fruit flies on restricted diets lived about 90 days, twice as long as those fed on a normal diet. But the scientists also found that when heavily fed fruit flies were switched at middle age -- day 14 to 22 -- to leaner diets, then the animals converted from the shorter life pattern of the overfed to the longer-lived pattern of flies that had been on a restricted diet all their lives. The carry-home message from the study, said Linda Partridge of University College London is that it is never too late to improve health by switching to sensible eating habits. "If this works in humans, then it means that from the time a person starts on a restricted diet, they'll be like individuals of the same age who were always on that diet," she said. "Their prospects of survival are the same." Partridge said that although the life-extending effects of short rations have never been proven in humans, it has been shown in monkeys, mice, rats and fruit flies that diet restrictions will lead to longer lives. "There is no reason to suppose it wouldn't apply equally to humans," she said. "There are diet restriction studies now underway with monkeys and all the indications appear the same [as with mice, rats and fruit flies]." James R. Carey, a University of California, Davis, researcher who studies the biology of aging, said the Partridge study is "important to the field," but does not provide final answers about the true effects of restricted diets. He said that fruit flies and other animals on restricted diets tend to stop reproducing. In mammals, for instance, the females stop ovulating and, hence, cannot reproduce. As a result, Carey said, animals on restricted diets may live longer simply because they are not expending energy and stress in the rigors of reproduction. He said studies still need to specifically isolate and prove that it is the lean diet alone that leads to longer life, and not related factors. º¤º°`°º¤ø,¸¸,ø¤º°`°º¤º Steve Chaney Remove "Vegetus." to get my real email address See the soc.singles HALL OF STUPID: http://member.newsguy.com/~gunhed/hallofstupid "If only sheep could cook, we wouldn't need women at all! 8)" - Dizzy, Message-ID: "Outside of this group, I don't remember hearing anyone in RL say that fat people are worthless." - some anonymous coward admitting the truth, Message-ID: "I watched The Accused last night with Jodie Foster. Tough movie. I was wondering what people felt as to whether or not they feel she deserved what happened to her." - Brenda Lee Ehmka, Message-ID: "Jade, your whole existence is spent trying to find people you can justify vetting your rage toward thorugh all forms of harassment. Do you realize that?" - Sunny, on Jade's life in a nutshell |
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Study: Even mid-life diet change can extend life
The cosmetic effects of such a diet are interesting. Check out the photo of Michael Cooper in this article: http://www.sciam.com/article.cfm?art...9B81809EC588EF 21&catID=2 Few women would find such a chronically underfed man ideally attractive, which just goes to show SEXUAL ATTRACTION IS NOT SOLELY ABOUT DESIRING MAXIMALLY HEALTHY PARTNERS. Never mind, probably impotent anyway, certainly wouldn't have much stamina..... |
#6
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Study: Even mid-life diet change can extend life
In article , The
Danimal wrote: Another carry-home message from the study is that if you want to restrict the food intake of a living animal to such a degree, you first have to restrict that animal to a cage. Like living in a small apartment with a case of flu ending its third week? ;( Maybe the effect of dietary restriction is different for captive animals, somehow. It would be extremely difficult to regulate the food intake of free-ranging animals. I wonder if anybody has tried? No, I haven't tried as i live across the street from a mega supermarket and wind up there almost daily in need fresh fruit and veg.. And the question is why not? I've been reading about the life-extending effects of short rations in caged animals about as far back as I can remember. I remember hearing about this when I was in college, and at the time I already knew it was old news. Enough decades have passed since the calorie-restricted diet news broke for someone to have tested the diet in humans. One problem is that according to Scientific American magazine, fewer than 1 in 1000 people have the self-control necessary to remain on the diet voluntarily. Well then, just drug me and cut off my rations. |
#7
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Study: Even mid-life diet change can extend life
Like living in a small apartment with a case of flu ending its third week? ;( carol, THREE WEEKS? what does your doctor say? |
#8
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Study: Even mid-life diet change can extend life
In article , rosie read and
post wrote: Like living in a small apartment with a case of flu ending its third week? ;( carol, THREE WEEKS? what does your doctor say? I won't go there. All my friends are also in their third week. I cannot take decongestants or anti biotic or steroids or flu shots and am resting, liquids, Vicks, and Tylenol especially compounded without soy, yeast, starch etc. My doctor is a lovely woman and excellent at writing prescriptions because she is a doctor of medicine, I stay with her in case I need admission to a particular hospital someday. |
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