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Ovulation is the process in a female's menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or casually, an egg). Ovulation also occurs in the estrous cycle of other female mammals, which differs in many fundamental ways from the menstrual cycle. The time immediately surrounding ovulation is referred to as the ovulatory phase or the periovulatory period.
Molecular alarm clock awakens ovules from resting period

Molecular alarm clock awakens ovules from resting period

At the start of reproductive life an ovary contains, on average, several thousands of immature ovules in a resting state that can last for several decades. [More]
Yale scientists provide new insights into evolutionary origin of female orgasm

Yale scientists provide new insights into evolutionary origin of female orgasm

Female orgasm seems to be a happy afterthought of our evolutionary past when it helped stimulate ovulation, a new study of mammals shows. [More]
Endometrial scratching in women appears to increase chance of clinical pregnancy, live birth

Endometrial scratching in women appears to increase chance of clinical pregnancy, live birth

There is a much disputed claim that "injury" to the lining of the uterus - whether inadvertent or deliberate - increases the chance of embryo implantation and thus the chance of pregnancy in certain groups of women having IVF. [More]
Study examines effects of lifestyle-intervention in obese women undergoing fertility treatment

Study examines effects of lifestyle-intervention in obese women undergoing fertility treatment

Women who are overweight or obese pose an ongoing challenge for the fertility clinic. Many studies show that these patients are at increased risk of infertility and are less likely than normal-weight women to conceive after fertility treatment. [More]
Study shows women with migraine history have rapid decline in estrogen levels

Study shows women with migraine history have rapid decline in estrogen levels

Researchers have long known that sex hormones such as estrogen play a role in migraine. But there's been little research on how that works. Do women with migraine have higher estrogen levels in general? Higher levels at the peak of the monthly cycle? [More]
Luteal phase of menstrual cycle may help thwart smoking behavior in women

Luteal phase of menstrual cycle may help thwart smoking behavior in women

Women who want to quit smoking may have better success by carefully timing their quit date with optimal days within their menstrual cycle, according to a new study from researchers at the Perelman School of Medicine at the University of Pennsylvania. [More]
Female hormones may be responsible for decreased risk of kidney failure in women than men

Female hormones may be responsible for decreased risk of kidney failure in women than men

Female hormones may play a role in women's decreased risk of developing kidney failure relative to men, according to a study appearing in an upcoming issue of the Journal of the American Society of Nephrology. The findings may be helpful for future attempts at safeguarding women's and men's kidney health in sex-specific ways. [More]
UW-Madison researchers develop quick, saliva-based test for measuring fertility hormone levels

UW-Madison researchers develop quick, saliva-based test for measuring fertility hormone levels

Doubts about their ability to become pregnant affect as many as 25 percent of American women, and solving that problem is the basic business plan for BluDiagnostics. Although the startup company was born in the University of Wisconsin-Madison Biochemistry Department, co-founder Katie Brenner says the idea came directly from her own difficulty with conception. [More]
Maternal obesity, poor nutrition during pregnancy affect egg reserves of female child

Maternal obesity, poor nutrition during pregnancy affect egg reserves of female child

New research involving mice, published in the April 2016 issue of The FASEB Journal, suggests that maternal obesity and poor nutrition during pregnancy affects the egg reserves of female offspring. This discovery improves scientific understanding of the long-term, generational, effects of obesity and poor nutrition. This understanding is the first step toward devising interventions to protect the fertility of females who experienced very difficult womb environments. [More]
Breast cancer medication letrozole could increase ovulation in women with PCOS

Breast cancer medication letrozole could increase ovulation in women with PCOS

A medicine used in breast cancer treatment is now considered the best option for treating the most common cause of infertility. [More]
New research reveals European women's attitudes towards sexual behaviours, emergency contraceptive pill

New research reveals European women's attitudes towards sexual behaviours, emergency contraceptive pill

New research released on International Women’s Day, reveals more than three in four European women (77%) are aware of the morning after pill as an option for managing the risk of an unplanned pregnancy after unprotected sex or contraceptive failure. [More]
IVF could reduce unintended twin births

IVF could reduce unintended twin births

The twin birth rate in the U.S. has surged over the last 30 years, mostly because of reproductive technologies including in vitro fertilization. Though it's partly the cause, IVF could also be the most promising solution to reducing unintended twin births, argues Dr. Eli Adashi in a new editorial in the American Journal of Obstetrics & Gynecology. [More]
Using painkillers during pregnancy may harm fertility of daughters

Using painkillers during pregnancy may harm fertility of daughters

Using painkillers in pregnancy may reduce fertility in subsequent generations, research suggests. Tests in rats found that when a mother was given painkillers during pregnancy, her female offspring had fewer eggs, smaller ovaries and smaller litters of babies than those not exposed to the drugs. [More]
Children conceived through infertility treatments no more likely to have developmental delays

Children conceived through infertility treatments no more likely to have developmental delays

Children conceived via infertility treatments are no more likely to have a developmental delay than children conceived without such treatments, according to a study by researchers at the National Institutes of Health, the New York State Department of Health and other institutions. [More]
Harley Street Fertility Clinic encourages couples to have more sex to increase chances of conception

Harley Street Fertility Clinic encourages couples to have more sex to increase chances of conception

Today, one of the UK’s leading fertility experts warns that couples with busy lives are not engaging in enough sexual intercourse and this is therefore impacting the nations fertility. [More]
Incorporating postpartum contraceptive services across the continuum of reproductive healthcare

Incorporating postpartum contraceptive services across the continuum of reproductive healthcare

Approximately one-quarter of inter-birth intervals in low- and middle-income countries are less than 24 months in length, exposing infants to risks of prematurity, low birthweight, and death. Increased evidence of these health risks has emerged in the past few decades and, after a period of neglect, interest in postpartum family planning has followed, supported by organizations like WHO and USAID. [More]
Ovarian cancer patients with a history of oral contraceptive use have better outcomes

Ovarian cancer patients with a history of oral contraceptive use have better outcomes

Patients who develop ovarian cancer appear to have better outcomes if they have a history of oral contraceptive use, according to a study by Mayo Clinic researchers published in the current issue of the journal BMC Cancer. [More]
Sexual activity causes physiological changes in the body that increase women's chances of getting pregnant

Sexual activity causes physiological changes in the body that increase women's chances of getting pregnant

Research from Indiana University has found that sexual activity triggers physiological changes in the body that increase a woman's chances of getting pregnant, even outside the window of ovulation. [More]
Weight loss and exercise improve ovulation in women with polycystic ovary syndrome

Weight loss and exercise improve ovulation in women with polycystic ovary syndrome

Weight loss and exercise improve ovulation in women who have polycystic ovary syndrome, a common hormone disorder that often causes infertility, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. [More]
Study explores effectiveness of frontline treatments for couples with unexplained infertility

Study explores effectiveness of frontline treatments for couples with unexplained infertility

A breast cancer drug with promise for improving the chance that couples with unexplained infertility can have a baby without increasing their risk of multiple births apparently does not deliver, according to a comparative study. [More]
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