Ovulation News and Research

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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.

Two-thirds of American women find out about their pregnancies by using a home pregnancy test

In a recent survey undertaken on behalf of First Response, and released in conjunction with a partnership with the March of Dimes aimed at improving pregnancy outcomes, reveals two-thirds (67 percent) of American women aged 18 to 44 who became pregnant found out about their pregnancies by using a home pregnancy test.

2 Aug 2005

Fertility drugs may be ineffective for women who lack a gene called the estrogen receptor beta

"What we found is that the beta estrogen receptor plays a role in moving the egg outside the ovary so it can be fertilized," said Kenneth Korach, Ph.D., Laboratory Chief at the National Institute of Environmental Health Sciences (NIEHS) where the research was conducted. "We never knew before what function this receptor played in reproduction."

20 Jul 2005

Sexual abstinence unrealistic - pediatricians say teens need birth control and emergency contraception pill

In complete contrast to the abstinence-only approach to sex education favored by religious groups and President Bush, an eminent group of pediatricians is saying that what todays' teenagers need is better access to birth control and emergency contraception.

6 Jul 2005

Uncomplicated twin pregnancies might be more risky than previously thought

As mothers get older and assisted conception becomes more common, the incidence of multiple births - primarily of nonidentical siblings, but also of identical ones - has dramatically increased.

28 Jun 2005

Effect of new Italian law on the choices available to infertile parents

Three presentations to the '21st annual conference of the European Society of Human Reproduction and Embryology highlighted the effect of the new Italian law on the choices available to infertile parents.

21 Jun 2005

Little evidence found for IVF as most effective infertility treatment

In vitro fertilization can improve pregnancy rates among couples with unexplained infertility, but there is little evidence to show whether IVF results in more live births than other treatments, according to a new review of recent studies.

1 May 2005

Potential therapeutic target for infertility and contraception

The multiple “litter” births of mice, versus the normal singleton pregnancy of humans, is due to defective processing in mice of a common mammalian protein called bone morphogenetic protein 15 (BMP-15), according to new research from the University of California, San Diego (UCSD) School of Medicine.

5 Apr 2005

Mutated BRCA1 genes cause ovarian cancer indirectly

Mutated BRCA1 genes cause ovarian cancer indirectly, by interfering with the biochemical signals one ovarian cell sends to another, according to a team of researchers led by scientists at the USC/Norris Comprehensive Cancer Center and the Keck School of Medicine of the University of Southern California.

28 Mar 2005

A weighty issue: can your eating habits make you infertile?

The societal pressures on women to be attractive, successful, and thin are stronger than ever. The desirable woman portrayed in the media is much thinner than the average woman. Popular slogans such as "thin is in" and "you can never be too rich or too thin" have equated thinness with happiness. The result is that for the first time in history, being attractive means being thin.

7 Mar 2005

New ideas for creating a new generation of oral medications to treat infertility

Researchers now have a much better picture of how follicle-stimulating hormone (FSH), one of the most frequently used fertility drugs, works, and with it new ideas for creating a new generation of oral medications to treat infertility.

20 Jan 2005

Easier access to emergency contraception would not increase the risk of STDs

Making it easier to obtain emergency contraception would not increase unprotected intercourse, lead to abandonment of regular contraception, or increase the risk of sexually transmitted infections (STIs), according to a study in the January 5 issue of JAMA.

5 Jan 2005

Hirsute women most likely have androgen excess-related disorders, primarily polycystic ovary syndrome

Among women in their child-bearing years, even minimal amounts of unwanted hair in male-type patterns – especially in the presence of other subtle changes – may be a sign of a hormonal imbalance linked to a variety of serious side effects and medical conditions, according to the December 2004 issue of the American Journal of Obstetrics and Gynecology.

23 Dec 2004

The regulation of physical activity in young children

The evidence at present suggests that neither better facilities, nor an increase in the amount of time allocated to PE to four hours a week, will improve physical activity levels in children as a whole and thereby impact on the rising tide of obesity.

16 Dec 2004

Five advanced tests provide answers to couples with unexplained infertility

For couples struggling with infertility, "all routine tests came back negative" are not the words they want to hear. With up to 15% of couples with "unexplained infertility" and another 3% struggling with recurrent pregnancy loss, advanced tests help doctors find answers for their most challenging cases.

16 Nov 2004

Insulin sensitizing drugs help thin women as well overweight women with polycystic ovary syndrome

Insulin-sensitizing drugs can help thin women with polycystic ovary syndrome even if they do not appear to be insulin resistant, broadening the range of women who can benefit from the therapy, a Virginia Commonwealth University researcher said in this month’s issue of the journal Fertility and Sterility.

16 Oct 2004

Breastfeeding women increase sexual desire among other women

Breastfeeding women and their infants produce a substance that increases sexual desire among other women, according to research at the University of Chicago.

6 Oct 2004

32-year-old woman has given birth to a healthy baby 7 years after banking her ovarian tissue before starting chemotherapy

Although she became infertile as a result of the chemotherapy, re-implantation of her ovarian tissue re-started ovulation 5 months later; she became pregnant 11 months after re-transplantation by natural fertilization. Details of the procedure appear in a research article published online by THE LANCET.

23 Sep 2004

Researching the history of reproductive medicine during the Nazi era is still taboo

Researching the history of reproductive medicine during the Nazi era is still taboo, a leading German professor will tell the 20th annual conference of the European Society of Human Reproduction and Embryology today (Monday 28 June).

28 Jun 2004

What causes polycystic ovary syndrome?

A woman finds herself with excessive facial hair, obesity, menstrual abnormalities, infertility, and enlarged ovaries may have polycystic ovary syndrome (PCOS), an unfortunate condition thought to be caused by excessive secretion by the ovaries of androgen, a hormone associated with male characteristics.

15 Jun 2004

Research shows there is no substitute for reliable birth control

US research published (Thursday 10 June) in Europe's leading reproductive medicine journal Human Reproduction suggests that a single act of unprotected intercourse is more likely to lead to an unwanted pregnancy than was previously believed.

12 Jun 2004