To age or not to age

To age or not to age.

According to the antagonistic pleiotropy theory of ageing, natural selection has favoured genes conferring short-term benefits to the organism at the cost of deterioration in later life. The 'disposable soma' theory expresses this as a life-history strategy in which somatic maintenance is below the level required to prevent ageing, thus enabling higher immediate fertility. It has been argued th...

To age or not to age--what is the question?

Over the past 50 years, a generally accepted theory about the evolution of aging has been developed. One common conclusion that has been deduced from this theory is that aging is inevitable in organisms in which there is a difference between offspring and parents. A recent paper by Sozou and Seymour questions this prediction using a mathematical model, but it remains to be seen whether their ne...

Hand Function Related to Age and Sex

Objectives: The purpose of this study was for evaluation of relationship between hand function and age, sex by Jebson Taylor Test.This study determined whether age might be a factor when associated with sex. Methods: In this study Jebson Taylor was evaluated on hand in 180 normal males and females (0.50% male, 0.50% female) in each of the following 7 subtest in 3 age groups: (15-25), (35-45)...

Folic Acid Supplementation: to Advise or not to Advise?

Prediction of Gestational Age According to Biparietal Diameter

SUMMARY Determination of gestational age have several usages in obstetrics and gynecology. The relation between Biparietal Diameter and gestational age has determined in this research using real time Sonography. 904 Iranian pregnant women between 12-40 weeks of gestation with accuratic last menstrual period and without the history of diabetes mellitus, hypertension, renal disease and Fetal an...