It has been argued that terminology in reproductive medicine related to reproductive success is ambiguous, confusing and misleading. A proposed solution is the conditional use of the term 'fertility' which is qualified according to statements concerning description, diagnosis and prognosis, and for which a grading system is proposed. We argue that there already exists (from 1989) a well-articul...

Progesterone, or progesterone like compounds, (progestins) have been investigated and used for estrous synchronization for several decades. However, the success rates of programs that use progestins have varied considerably. A primary challenge to the use of this hormone for synchronization was the repeated observation in the past of reduced fertility at the synchronized estrus. Perhaps of even...

The fundamental assumption of the Malthusian model of pre-industrial society is that reproductive success increased with income. However, the direct evidence for this proposition for any pre-industrial society is surprisingly weak. Indeed most tests of this assumption for pre-industrial England, France and Japan have failed to detect any link between either mortality and real incomes or fertili...

Birth order has been examined over a wide variety of dimensions in the context of modern populations. A consistent message has been that it is better to be born first. The analysis of birth order in this paper is different in several ways from other investigations into birth order effects. First, we examine the effect of birth order in an egalitarian, small-scale, kin-based society, which has n...

Birth order has been examined over a wide variety of dimensions in the context of modern populations. A consistent message has been that it is better to be born first. The analysis of birth order in this paper is different in several ways from other investigations into birth order effects. First, we examine the effect of birth order in an egalitarian, small-scale, kin-based society, which has n...

Long-term survival is the priority in treatment of patients with malignant tumors. In the field of gynecology, fertility preservation has also recently become an important objective due to improved treatment outcomes and different needs of patients. Methods for fertility preservation include cervical conization, ovarian protection against radiation or chemotherapy for ovarian cancer since the o...

BACKGROUND As in many advanced societies, the age at first birth and the rate of post-menopausal pregnancies in Israel are constantly increasing. Since Israeli university students are the most likely population to postpone parenthood, this study aims at evaluating their awareness of: (i) women's age-related fertility decline; (ii) age-dependent success rates of IVF technology and (iii) medical ...

Scholarship on assisted reproductive technologies (ART) has emphasized the commercial nature of the interaction between fertility patients and their physicians, but little attention has been paid to precisely how clinics persuade patients to choose their clinics over their competitors’. This Article offers evidence about how clinics sell ART based on clinics’ advertising on their websites. To a...

Exposure to estrogenic endocrine disruptors (EDCs) during development affects fertility, reproductive and non-reproductive behavior in mammals and fish. These effects can also be transferred to coming generations. In fish, the effects of developmental EDC exposure on non-reproductive behavior are less well studied. Here, we analyze the effects of 17α-ethinylestradiol (EE2) on anxiety, shoaling ...

Social status motivates much of human behavior. However, status may have been a relatively weak target of selection for much of human evolution if ancestral foragers tended to be more egalitarian. We test the "egalitarianism hypothesis" that status has a significantly smaller effect on reproductive success (RS) in foragers compared with nonforagers. We also test between alternative male reprodu...