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Exposure to chemicals may reduce the size of ovarian reserve and linked to lower egg counts in humans

Fertility in women is dependent on ovarian follicles that contain immature oocytes. All follicles are formed during fetal development and should last for the reproductive lifespan of the woman. At most, there are a few million non-growing follicles in the ovaries of the female fetus during mid-gestation, and thereafter, the numbers decrease. At the onset […]

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Intake of red meat, either as processed or unprocessed, is a major culprit in promoting endometriosis risk

Endometriosis is an estrogen-dependent chronic gynecologic disorder that significantly reduces the quality of life of affected women. Characterized by adhesions of endometrial fragments in extra-uterine sites (predominantly in the peritoneal cavity and ovary but occasionally on the diaphragm, liver, and abdominal wall), the condition occurs in ~10% of the general population and is associated with […]

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Doing more with less: Sperm without a fully active tail move faster and more efficiently

sperm

Sperm cells moving their long tail to swim through the body in search of an egg is a familiar image, but a fully ‘powered’ tail may not be the key to success, according to a new UK study which could be crucial for improving the outcomes of assisted fertility treatments. Propulsion of sperm and how […]

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Is there any seasonal pattern to fecundability? When is most likely for babies to be conceived?

In human populations, there are strong seasonal patterns of births that vary across geographic regions and time periods. However, previous studies of seasonality and fecundity are limited because they examine season of birth rather than season of conception and therefore neglect to account for seasonal variation in initiating attempts to conceive or pregnancy loss or […]

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WiFi may Cause Infertility

WiFi

Dangerous levels of microwave radiation from Wi-Fi and other devices were discovered in school classrooms in Ontario as measured by students from Peel District School Board. The radiation levels found were strong enough to cause infertility problems. The students organized an open meeting in order to inform all school students about the dangers they are […]

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Does coenzyme Q10 supplementation improve fertility outcomes?

Q10

Increased oxidative stress has been identified as a pathogenetic mechanism in female infertility. However, the effect of specific antioxidants, such as coenzyme Q10 (CoQ10), on the outcomes after Assisted Reproductive Technologies (ART) has not been clarified. The aim of this study was to systematically review and meta-analyze the best available evidence regarding the effect of […]

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Hair sample tests may give women more accurate fertility predictions

woman

Women wanting to know how many eggs they have left may in future be able to have their hair tested to reveal their hormone levels. A signalling chemical related to women’s fertility called anti-Müllerian hormone (AMH) is incorporated into hair shafts while they are still underneath the skin. Testing the hair may give a better […]

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Human eggs prefer some men’s sperm over others

sperm

Human eggs use chemical signals to attract sperm. New research from Stockholm University and Manchester University NHS Foundation Trust shows that eggs use these chemical signals to choose sperm. Different women’s eggs attract different men’s sperm—and not necessarily their partner’s. Humans spend a lot of time and energy choosing their partner. A new study by […]

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Should you always immediately intervene when your baby cries?

Leaving an infant to ‘cry it out’ from birth up to 18 months does not adversely affect their behaviour development or attachment, researchers from the University of Warwick have found, they also discovered that those left to cry cried less and for a shorter duration at 18 months of age. Researchers from the University of […]

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