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Related Concept Videos

In Vitro Fertilization01:24

In Vitro Fertilization

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In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
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Birth Control Methods01:22

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Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although...
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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Infertility in Females01:28

Infertility in Females

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Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
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Fertilization01:38

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During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
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Spermatogenesis01:41

Spermatogenesis

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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
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Updated: Jul 16, 2025

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
08:46

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

Published on: September 16, 2021

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Timed intercourse for couples trying to conceive.

Tatjana Gibbons1, Jane Reavey2, Ektoras X Georgiou3

  • 1Nuffield Department of Women's and Reproductive Health, University of Oxford , Oxford, UK.

The Cochrane Database of Systematic Reviews
|September 14, 2023
PubMed
Summary
This summary is machine-generated.

Timed intercourse using urinary ovulation tests likely increases live birth and pregnancy rates for couples trying to conceive. However, evidence on adverse effects and the impact of fertility awareness-based methods remains uncertain, requiring further research.

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Fertility Preservation in Patients with Severe Ovarian Dysfunction
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Related Experiment Videos

Last Updated: Jul 16, 2025

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Fertility Preservation in Patients with Severe Ovarian Dysfunction
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Area of Science:

  • Reproductive medicine
  • Clinical trial analysis
  • Fertility research

Background:

  • Fertility is influenced by various factors, including the timing of intercourse within the fertile window.
  • Timed intercourse, involving ovulation prediction, aims to increase conception likelihood.
  • Methods for ovulation prediction include hormone measurements, fertility awareness-based methods (FABM), and ultrasonography, each with potential drawbacks like stress and cost.

Conclusions:

  • Timed intercourse using urinary ovulation tests likely improves live birth and pregnancy rates for couples trying to conceive.
  • Insufficient data exists to determine the effects of urinary ovulation tests on adverse events, clinical pregnancy, time to pregnancy, and quality of life.
  • Further research is needed to fully understand the safety and effectiveness of timed intercourse using various ovulation prediction methods.