By Ilya Ilyich Metchnikoff
ISBN-10: 0826118763
ISBN-13: 9780826118769
"Three leader evils that grasp over us are sickness, previous age, and dying. to review and keep watch over senescence, Metchnikoff proposed the institution of a brand new medical self-discipline he named 'gerontology.' during this vintage textual content at the prolongation of existence, Metchnikoff means that technological know-how can be inspired and helped in each real way in its activity of elimination the ailments and behavior that now hinder human existence from working its basic path, and his trust is that, have been the duty complete, the good reason behind pessimism could disappear. Metchnikoff used to be capable of proclaim himself an optimist, and located, in organic technology, for the current new release a desire, or no less than an finish in the direction of which to paintings, and for destiny generations a potential success of that hope." - From the advent by means of Gerald Gruman, MD, PhD
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Additional resources for The Prolongation of Life: Optimistic Studies (Classics in Longevity and Aging)
Sample text
However, even if we consider only the mammalia, it is impossible to accept Flourens' law, without considerable reserve. Weismann3 has referred to the case of the horse, which is completely adult at 4 years, but lives not merely 5 times that period but 10 or even 12 times. Mice grow extremely quickly, so that they are able to reproduce at the age of 4 months. Even if we take 6 months as their period of growth, their longevity of 5 years is twice as long as it would be according to the rule of Flourens.
Maupas described, are followed by a process of rejuvenescence. According to the more recent results of several investigators, the difference is still greater than I had supposed. Enriquez4 has been able to propagate Infusoria to the 700th generation without any sign of senility being displayed. Here we are far from the condition in the human race. R. Hertwig,5 one of the best observers of the lower animals, has recently attempted to show that the very simple animalculae of the genus Actinosphaerium are subject to true physiological degeneration.
Mice, rats, rabbits, and many other rodents seldom live more than 5 or 10 years but reproduce with enormous rapidity. It is almost possible to imagine that there is some sort of intimate link, possibly physiological, between longevity and low fertility. It is a current opinion that reproduction wastes the maternal organism and that mothers of many children grow old prematurely and seldom reach an advanced age. This would seem to mean that fecundity was the cause of the short duration of life. However, we must guard ourselves against such a theory.
The Prolongation of Life: Optimistic Studies (Classics in Longevity and Aging) by Ilya Ilyich Metchnikoff
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