Word: age
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Dates: during 1950-1959
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...increase since 1900-the remaining life expectancy of those who have already reached 70 has increased but little in the same period-from 9.3 to 11.2 years. This is because most of the life-saving achievements in medicine and public health have been concentrated in the younger age brackets, from the first few weeks of life through adolescence. The middle-aged have benefited mainly from the decline in deaths from tuberculosis and pneumonia...
...Memorial Center for Cancer and Allied Diseases (TIME, June 27, 1949). Individually, each has set up a namesake foundation to advance the education and careers of promising young scientists. Sloan and Kettering are alike in enjoying superb physical health-better than Stagg's when he was their age...
Immortal Amoeba. Gerontology has confirmed that some of age's limitations are imposed by nature herself. One-celled organisms such as the amoeba, because they reproduce by forever growing and dividing, are the only true immortals. Man, like all other multicelled organisms in both animal and vegetable kingdoms, is foredoomed to aging changes and ultimate death. But the rate and nature of these changes are far from constant. There are wide variations even among animals of a single species in a state of nature, and naturally they are vastly wider among human beings, living under infinitely more varied conditions...
...teeth-such as are left of them -become more resistant to decay in later life. On empirical evidence, Shakespeare anticipated microanatomy when he said that the oldster is "sans taste," for the average number of taste buds is 208 during the prime of life, but only 88 after the age...
What causes the slowdown in replace ment? Gerontologists cannot be sure, but their highest-powered laboratory tech niques are now concentrated on enzymes, those little-understood "organic catalysts" that regulate all the functions of metabo lism-both breakdown (catabolism) and buildup (anabolism). With age, a digestive change definitely involving an enzyme occurs in the salivary glands : they secrete less ptyalin, an enzyme that converts starch into sugars. Researchers believe that there may be many such changes...