2025年3月11日 · Human Fertility is a leading international journal publishing research on human fertility and infertility, including molecular medicine and healthcare delivery.

The Human Fertility Database (HFD) is the leading scientific data resource on fertility in the developed countries. This open access database provides detailed and high-quality historical and recent data on period and cohort fertility by age of mother and birth order.

In demographic contexts, fertility refers to the actual production of offspring, rather than the physical capability to reproduce, which is termed fecundity. [1][2][3] The fertility rate is the average number of children born during an individual's lifetime.

Human fertilization is the union of an egg and sperm, occurring primarily in the ampulla of the fallopian tube. [1] The result of this union leads to the production of a fertilized egg called a zygote , initiating embryonic development .

7 Role of African spices and vegetables in human fertility. Fertility is the natural capability to produce offspring and differ from fecundity, which is defined as the potential for reproduction (influenced by gamete production, fertilization, and carrying a pregnancy to term).

fertility, ability of an individual or couple to reproduce through normal sexual activity. About 90 percent of healthy, fertile women are able to conceive within one year if they have intercourse regularly without contraception.

2022年9月6日 · Ovulation is when your ovary releases an egg for fertilization. Tiny finger-like structures called fimbriae help guide the egg through your fallopian tubes towards your uterus. During this journey through your fallopian tubes, an egg can be fertilized by sperm. Males produce sperm in their testicles.

In this article, I shall propose that the short-term decline in human TFR is largely driven by socioeconomic and educational factors that can be readily addressed by changes in policy, support and attitude.

This chapter considers the evolutionary biology of human fertility, parental investment, and mating and is designed to provide a broad overview of the topic. It focuses on three themes. The first is the timing of life events, including development, reproduction, and aging.

Decades of research on human fertility has presented a clear picture of how fertility varies, including its dramatic decline over the last two centuries in most parts of the world. Why fertility varies, both between and within populations, is not nearly so well understood.