Abstract
This is a preliminary report on a 3-year multidisciplinary study of aging among historically and genetically related Mennonite congregations in Kansas and Nebraska. Three aspects of longevity and aging are examined: (1) the relationship of heterozygosity to survivorship using 8 genetic blood group loci, (2) changes in taste sensitivity with age using 14 dilutions of PTC; and (3) life span correlations among parents and offspring during a 100 year period. Heterozygosity was found to be independent of survivorship. No diminution in taste sensitivity to PTC was found with increasing age although a significant difference in PTC taste thresholds was found between males and females. No relationship was found between nontasters and individuals with a history of thyroid disease. Mother's life span was found to correlate more closely with daughter than any other familial correlation.
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