Guest guest Posted October 10, 2003 Report Share Posted October 10, 2003 Hello CR ALL: Q1) Is CR effective in older animals? The answer is yes, and it is provable using gene chip microarrays. Q2) How effective is CR in older animals? The answer is that CR appears to be effective in older animals in all the same ways that CR is effective in animals that are young. Q3) Why is this good news? The answer is that an older person who initiates a CR program stands to gain the same type of CR benefits that a young person would gain from CR. Q4) How soon do the effects of CR occur in an older animal? CR effects occur almost immediately (within weeks), and they are significant and measurable. Dr Spindler is a scientist who has been studying Calorie Restriction in middle-age and old-age animals using gene chips. These gene chips are RNA-DNA micro-array measurement devices that allow reading the level of gene expression in animal tissues, to see if when CR is begun in an older animal, whether the gene expression (the proteins the genes encode for) reverts back to that of a YOUNGER animal. This reversion of genetic expression to that of a younger animal is a characteristic signature of CR that was discovered by Dr. Spindler, and became the first biological proof that CR actually causes " age reversal " , or " anti-aging " in the scientific sense that CR causes the genes to change their expression to a more youthful state. The anti-aging discovery about CR made front page headlines approx 2 years ago, when it was announced that CR initiates age reversal in middle-age and old-age animals. Now a new paper has been released on Dr. Spindler's research at a conference on aging, where further benefits of CR in older animals are discussed. A quote from the abstract http://www.gen.cam.ac.uk/iabg10/abs/Spindler.htm reads this way: ''Caloric restriction is the most robust environmental method known for decelerating aging and the development of age-related diseases. CR is also widely thought to be less effective in older animals. Using survival and high-density microarray studies, we demonstrate that CR acts rapidly and reversibly to establish a pattern of gene expression temporally associated with enhanced life span and reduced tumor incidence in mice. CR was fully effective at extending life span and reducing tumor incidence when begun in old animals. The results indicate that therapies mimicking the gene expression effects of CR may be rapidly effective, even in old animals.'' The word temporary means that the CR effects remain, so long as the animal remains in a CR state. This is outstanding news for the middle-aged and senior citizens within our ranks. Here is wisdom: Cut calories, improve nutrition, live better, live longer, and be happy! -- Warren PS: Thank you Tim Tyler, who called attention to the abstract above. Quote Link to comment Share on other sites More sharing options...
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