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.

Men find masculine men more threatening during their partner's ovulation phase

Men become more jealous of dominant males when their female partner is near ovulation, researchers at the University of Liverpool have found.

3 May 2006

Inflammatory reaction drives hormone resistance in cancer

In the journal Cell, researchers report new evidence to explain why prostate cancer and other hormone-dependent cancers may become resistant to hormone therapies.

21 Feb 2006

Hormone discovered in bird brains also plays major role in mammalian reproductive system

University of California, Berkeley, researchers have discovered a new actor in the mammalian reproductive system, a hormone that fills a role long suspected, but until now undetected.

7 Feb 2006

First description of female-specific Ischemia Syndrome

Although ischemic heart disease - the reduction of blood flow that can lead to heart attacks - is often considered a "man's disease," it takes the lives of more women than men each year. In fact, in 2000, about 60,000 more women than men died from cardiovascular disease.

5 Feb 2006

Research indicates birth control pill could cause long-term problems with testosterone

In the January issue of The Journal of Sexual Medicine, researchers have published a new investigation measuring sex hormone binding globulin (SHBG) before and after discontinuation of the oral contraceptive pill.

6 Jan 2006

New research indicates birth control pill could cause long-term problems with testosterone

4 Jan 2006

Perimenopause critical for preventing heart disease and osteoporosis

Research in monkeys suggests that the perimenopause - the five to 10 years before a woman's menopause - is a critical time for preventing heart disease and osteoporosis.

13 Dec 2005

Taking HRT before the menopause may prevent heart disease

According to American researcher Jay Kaplan, taking the "Pill" before the menopause or starting hormone replacement therapy before menopausal symptoms begin could actually help prevent heart disease in women.

6 Dec 2005

Warning that breast cancer drug can harm fetus

Health Canada along with drug company Novartis Pharmaceuticals Canada, have issued a warning concerning the drug Femara (letrozole), which is used to treat breast cancer in women who are postmenopausal.

30 Nov 2005

Women warned about contraceptive patch

The makers of a revolutionary contraceptive patch are warning women that they are at a greater risk of blood clots and other serious side-effects because of the higher doses of hormones the patch delivers.

15 Nov 2005

Olfactory epithelium plays a critical role in pheromone detection

Howard Hughes Medical Institute researchers have discovered that pheromones essential for mating behavior in mice are recognized by the nose and not by the vomeronasal system, as researchers had long suspected.

14 Nov 2005

First step in exploring the GnRH reproduction-related circuitry in the brain

Howard Hughes Medical Institute researchers have discovered a vast network of neurons in the brain of mice that governs reproduction and controls the effects of reproductive status on other brain functions.

14 Nov 2005

Fertility treatment most successful in summer

When it comes to considering fertility treatment, scientists say that women who have the treatment during the summer are twice as likely to become pregnant as those who have it in the winter.

19 Oct 2005

Study of the molecular mechanism involved in the human implantation process

In spite of advances in assisted reproductive technologies, more than 6.1 million women in the United States - roughly 20 percent of all women of reproductive age - suffer from infertility.

17 Oct 2005

Researchers find gene that is important for the control of fundamental rhythms in nematode worms

University of Utah biologists found a gene that controls rhythmic events in a worm's life: swallowing food, laying eggs and pooping.

9 Oct 2005

Nitric oxide could one day help women in their 30s and 40s remain fertile longer

Researchers have found that an important chemical compound, nitric oxide, appears to slow or reverse the aging of eggs in mouse ovaries. The finding suggests nitric oxide could one day help women in their 30s and 40s remain fertile longer and increase their chances of having healthy babies, the scientists say.

7 Sep 2005

Fine-tuning fertility testing with take-home technology

A take-home fertility-testing kit under development in a Massey University laboratory will give women and couples further control over pregnancy planning.

6 Sep 2005

Morning after pill - FDA must decide by September

Apparently federal health officials will soon decide whether to allow the sale of emergency contraception without a prescription.

10 Aug 2005

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