A severe decline in child births has occurred over the past half century, which will lead to
considerable population declines, particularly in industrialized regions. A crucial question is …

Infertility is a disease characterized by the failure to establish a clinical pregnancy after 12
months of regular and unprotected sexual intercourse. It is estimated to affect between 8 and …

Diet is the only known intervention which has been conclusively shown to extend life span. It
can be argued the key role diet has to play in the aging process came to prominence as a …

It is predicted that Japan and European Union will soon experience appreciable decreases
in their populations due to persistently low total fertility rates (TFR) below replacement level …

Background The period fertility in China has declined to very low levels, and the completed
cohort fertility rate (CFR) has also decreased significantly. However, the exact fertility rate …

Immigrant entrepreneurship is an important socio-economic phenomenon today. Many
studies have been developed in academic arenas of different disciplines. This paper aims to …

Menopause is the final step in the process referred to as ovarian ageing. The age related
decrease in follicle numbers dictates the onset of cycle irregularity and the final cessation of …

During the twentieth century, the global population has gone through unprecedented
increases in economic and social development that coincided with substantial declines in …

Substantial changes in population size, age structure, and urbanization are expected in
many parts of the world this century. Although such changes can affect energy use and …

Total fertility rates fell to previously unseen levels in a large number of countries beginning
in the early 1990s. The persistence of TFRs below 1.3 raised the possibility of rapid …