نتایج جستجو برای: fertility factors
تعداد نتایج: 1120813 فیلتر نتایج به سال:
Fertility preservation and sexual health are increasingly important as more young cancer patients survive their disease. Our aims were to describe the frequency with which reproductive and sexual health discussions occur, and to identify clinical factors associated with these discussions. Medical records of patients aged 20-39 diagnosed with solid tumors from 2008-2010 who survived ≥2 years wer...
Although there is substantial evidence that environmental conditions disrupt reproductive function among newcomers to hypoxic settings, it is not certain that low oxygen pressure reduces fertility among those indigenous to high altitude. Even when fertility does appear to be relatively lower, numerous behavioral and sociocultural factors may be responsible. These are best examined within demogr...
In the past, cancer survivors tended to be most concerned about disease recurrence and treatment side effects. As survival rates have increased, however, patients are now also concerned about quality-of-life issues such as preserving fertility potential. It is well known that cancer treatment adversely affects male fertility via direct effects on the testis and/or through the endocrine glands. ...
: Irish dairy herd fertility has been declining since the 1980s. The extent, nature and causes of this decline in fertility and the current status of Irish dairy herd fertility were described. An increase in calving interval of approximately one day per year has been recorded. The principal components of this trend have been an increased incidence of postpartum endocrinopathies, reduced express...
Using path anaysis and the 5 per cent PUMS data of the 1990 and 2000 [US] censuses, this study examines: (1) the correlation between Chinese-American sex preference for children and their fertility behavior; and (2) the interaction between the sex preference and its socioeconomic determinants. Of the normative and non-normative factors investigated in this study, offspring sex preference is the...
This study was carried out to analyze the vertical transmission of Yq AZFc microdeletions from father to son in infertile Han Chinese families to investigate genetic factors and family background affecting fertility status. The peripheral blood of infertile males in 19 Han families was extracted and screened with modified multiplex polymerase chain reaction (PCR). Family trees were drawn accord...
Premature menopause, that is, menopause - spontaneous or iatrogenic - occurring at or before the age of 40 years, affects sexual identity, sexual function and sexual relationships. The woman's health, wellbeing and achievement of life's goals may be variably impaired. Factors modulating the individual's sexual outcome after premature menopause include: etiological heterogeneity of premature men...
Sperm experience intense and varied selection that dramatically impacts the evolution of sperm quality. Selection acts to ensure that sperm are fertilization-competent and able to overcome the many challenges experienced on their way towards eggs. However, simply being able to fertilize an egg is not enough to ensure male fertility in most species. Owing to the prevalence of female multiple mat...
The dynamics of Israel’s fertility patterns revolve around three major socio-demographic dimensions – religion, ethnicity and socioeconomic structure. Jews, Moslems Arabs, Christian Arabs, and Druze Arabs are the major ethno-religious groups. The second dimension is ethnicity among the Jewish population. Distinction is made between populations of European or American origins (to be referred to ...
This article reviews research on the effects of economic recessions on fertility in the developed world. We study how economic downturns, as measured by various indicators, especially by declining GDP levels, falling consumer confidence, and rising unemployment, were found to affect fertility. We also discuss particular mechanisms through which the recession may have influenced fertility behavi...
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