I have already shown, in the “Nature of Man,” the difference which exists between senile degeneration in our own bodies and the phenomena of senescence amongst Infusoria which, as M.
With this object, a systematic investigation of senescence should be made in institutions for the aged, where there are always a large number of people from 75 to 90 years old, although centenarians are extremely rare.
I think it a fair inference that senility, the precocious senescence which is one of the greatest sorrows of humanity, is not so profoundly seated in the constitution of the higher animals as has generally been supposed.
The answer to the question as to whether our senescence can be ameliorated must be approached from several points of view.
This part of my theory has encountered very strong criticism, especially with regard to the part played by the macrophags in the senescence of nervous tissue.
The bleaching of hair and the atrophy of the brain in old age thus furnish important arguments against the view that senescence is the result of arrest of the reproductive powers of cells.
It is no mere analogy to suppose that human senescence is the result of a slow but chronic poisoning of the organism.
The cessation of the power of reproduction cannot be the cause of the senescence of brain-cells, for these cells do not reproduce even in youth.
For youth this embroidery of details is the precocious senescence that Nordau has so copiously illustrated as literary decadence.
Whether there is, entirely apart from all conditions affecting nutrition and the effect of injuries which disturb the usual cell activities, an actual senescence of the cells of the body is uncertain.
Many of the hypotheses have been interesting, that of Metschnikoff, for example, who finds as a dominating influence in causingsenescence the absorption of toxic substances formed in the large intestine by certain bacteria.
But we must make further studies before we can answer the question whether our senescence can be ameliorated.
I think it a fair inference that senility, that precocious senescence which is one of the greatest sorrows of humanity, is not so profoundly seated in the constitution of the higher animals as has generally been supposed.
There is a certain grimly comic irony in this commiseration with us, on the part of our British critics, for our failure joyously to realize our old age, which they would have us believe is a sort of premature senescence and decay.
He was abreast of the important scientific discoveries of his day and was not at all astonished that the problem of senescence should be solved.
How it may be some years hence, when this cure for senescence has become a commonplace, I do not pretend to say.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "senescence" in a variety of sentences. We hope that you will now be able to make sentences using this word.
