Current Ovulation News and Events

Current Ovulation News and Events, Ovulation News Articles.
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Competition among human females likely contributed to concealed ovulation
Humans are among the few species that lack overt physical indicators of female fertility. One explanation for concealed ovulation in human females is that hiding fertility from males helps females secure resources from males for raising children. A new model developed by a team of evolutionary scientists casts doubt on this idea, showing that females might have evolved to conceal ovulation from one another, not from males. (2021-01-25)

The three days pregnancy sickness is most likely to start pinpointed
Researchers from the University of Warwick have narrowed the time frame that nausea and vomiting during pregnancy will potentially start to just three days for most women, opening up the possibility for scientists to identify a biological cause for the condition. (2021-01-12)

Oral contraceptive pills protect against ovarian and endometrial cancer
A comprehensive study from Uppsala University, involving more than 250,000 women, shows that oral contraceptive use protects against ovarian and endometrial cancer. The protective effect remains for several decades after discontinuing the use. The study is published in the journal Cancer Research. (2020-12-17)

How an egg cell's "operating manual" sets the stage for fertility
Recently published work from Carnegie's Allan Spradling and Wanbao Niu revealed in unprecedented detail the genetic instructions immature egg cells go through step by step as they mature into functionality. Their findings improve our understanding of how ovaries maintain a female's fertility. (2020-10-08)

Sugar promotes sperm longevity in pig reproductive tract
For many livestock species, artificial insemination (AI) is standard. But it can be tricky to achieve success the first time, thanks to variability in ovulation timing across the herd. A new University of Illinois study identifies a naturally occurring sugar that slows the maturation of sperm in pigs, opening up the possibility of extending sperm storage time within the female reproductive tract and increasing the chances of successful fertilization through AI. (2020-09-17)

Scientists prove bird ovary tissue can be preserved in fossils
A research team led by Dr. Alida Bailleul from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences has proved that remnants of bird ovaries can be preserved in the fossil record. (2020-07-28)

'Morning sickness' is misleading and inaccurate, new study argues
The term 'morning sickness' is misleading and should instead be described as nausea and sickness in pregnancy, argue researchers led by the University of Warwick who have demonstrated that these symptoms can occur at any time of the day -- not just the morning. (2020-06-30)

Breast cancer drug, olaparib, depletes store of immature eggs in mouse ovaries
Australian researchers have shown for the first time that a new drug used to treat breast cancer patients damages the store of immature eggs in the ovaries of mice. Authors of the study published in Human Reproduction journal say fertility counselling should be considered for young women who may be about to be treated with olaparib. (2020-06-30)

Genetic analysis suggests distinct subtypes of polycystic ovary syndrome
Polycystic ovary syndrome (PCOS), an infertility disorder affecting at least 15% of reproductive-age women, may have at least two different subtypes, suggests a study funded by the National Institutes of Health. The findings could provide important information on the possible causes of PCOS and for developing more effective ways to treat the condition. (2020-06-23)

Genes may play a role in weight gain from birth control
A woman's genetic make-up may cause her to gain weight when using a popular form of birth control, according to a study from researchers at the University of Colorado Anschutz Medical Campus. (2020-05-12)

A study by TalTech geneticists revealed new potential causes of female infertility
Over the last six years a group of Estonian geneticists led by Associate Professor Agne Velthut-Meikas and a PhD student Ilmatar Rooda from TalTech Department of Chemistry and Biotechnology have studied genes previously associated primarily with female hormone synthesis and ovarian follicle development. The findings suggest that these genes may play a far more complex role in oocyte maturation than previously assumed. (2020-05-06)

Conservation research on lynx
Scientists at the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) and the Leibniz Institute for Molecular Pharmacology (Leibniz-FMP) discovered that selected anti-oxidative enzymes, especially the enzyme superoxide dismutase (SOD2), may play an important role to maintain the unusual longevity of the corpus luteum in lynxes. It is highly likely that SOD2 not only detoxifies the reactive oxygen radicals in the cells, but also inhibits programmed cell death. (2020-04-23)

What women really want
Earlier research purported to show links between a woman's cycle and how attracted she was to men's behavior. Research at the University of Göttingen questions this. It showed shifts in women's cycles did not affect their preferences for men's behavior. Researchers found, however, that when fertile, women found all men slightly more attractive. Irrespective of their cycle, flirtier men were evaluated as more attractive for sexual relationships but less for long-term relationships. Results appeared in Psychological Science. (2020-03-06)

Swamp wallabies conceive new embryo before birth -- a unique reproductive strategy
Reproduction specialists from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW), Germany, and the University of Melbourne, Australia, recently demonstrated that swamp wallabies ovulate, mate and form a new embryo before the birth of the previous offspring. They thereby continuously support embryos and young at different development stages before and after birth. (2020-03-02)

Breastfeeding and childbearing linked to lower early menopause risk
Results of a new epidemiological analysis of more than 108,000 women observed a lower risk of early menopause among women who had at least one pregnancy lasting at least six months and among those who had breastfed their infants. Further, risk was lowest among those who breastfed exclusively. The work is by first author and Ph.D. student Christine Langton, with her advisor Elizabeth Bertone-Johnson at UMass Amherst. (2020-01-22)

Having less sex linked to earlier menopause
Women who engage in sexual activity weekly or monthly have a lower risk of entering menopause early relative to those who report having some form of sex less than monthly, according to a new UCL study. (2020-01-14)

Step toward 'ink' development for 3-D printing a bioprosthetic ovary
For the first time, scientists identified and mapped the location of structural proteins in a pig ovary. Ongoing development of an 'ink' with these proteins will be used for 3-D printing an artificial (or bio-prosthetic) ovary that could be implanted and allow a woman to have a child. Findings were recently published in Scientific Reports. (2020-01-06)

Corpus luteum cells of cats successfully cultivated and comprehensively characterized
The reproduction of lynxes is highly mysterious. Unlike other wild cats, most lynxes are only receptive for a few days once a year. The Berlin team has now achieved another breakthrough in solving the puzzle: they were able to isolate several cell types of corpus luteum from domestic cat tissue and characterise their function with the help of cell cultures. The new method can also be applied to endangered felids such as the Iberian lynx. (2019-12-20)

Calcium added to acidified prepartum diets for dairy cows benefits future reproduction
Achieving an appropriate calcium balance in dairy cows is critical near calving, but not only to ensure a healthy transition to lactation. According to a new study from the University of Illinois, calcium added to acidified prepartum diets can improve a whole suite of postpartum outcomes, including lower rates of uterine infection and quicker return to ovulation. (2019-11-05)

'Wild idea' opens possible new frontier for preventing ovarian cancer
A laboratory study published in Clinical Cancer Research offers a new hypothesis about how ovarian cancer forms and suggests how it might be prevented. The study is the first to show that the natural stiffening of the ovaries called fibrosis occurs with age. It also suggests that the diabetes drug metformin may be able to halt this process. (2019-10-09)

Individualized approach to identify 'fertile windows' could benefit many women
Menstrual cycles are considerably varied with only 13% of women having cycles that last 28 days, according to a new study led by UCL and Natural Cycles, a contraceptive app. (2019-08-26)

What do the red 'ornaments' of female macaques mean?
Scientists demonstrated that, contrary to what had been assumed for several years, colour variations among female macaques do not precisely indicate the time of ovulation. On the other hand, dominant female macaques, who usually have greater reproductive success, have darker hindquarters. (2019-07-19)

Are fertility apps useful?
Researchers at EPFL and Stanford have carried out an analysis of the largest datasets from fertility awareness apps. Analyzing data from 200,000 users of the apps Sympto and Kindara, they have been able to make population-level observations regarding user demographics, tracking behavior patterns and accuracy in measuring menstrual health and ovulation. (2019-07-16)

A study in scarlet Japanese macaques
Researchers assumed that the red faces in Japanese macaques signaled fertility. But new research indicates that it acts more as a 'badge' of social status and is involved in signaling social attributes than fertility. (2019-07-08)

Popular strategy for raising pregnancy rates in IVF fails to deliver improvement in large trial
The increasingly popular trend for fertility clinics to freeze all IVF embryos for later transfer has been shown in a large multicentre randomised trial to offer no improvement in delivery rates over traditional 'fresh' embryo transfers. 'Our findings give no support to a general freeze-all strategy in normally menstruating women,' said investigator Dr Sacha Stormlund from Copenhagen University Hospital in Denmark. (2019-06-24)

Marijuana and fertility: Five things to know
For patients who smoke marijuana and their physicians, 'Five things to know about ... marijuana and fertility' provides useful information for people who may want to conceive. The practice article is published in CMAJ (Canadian Medical Association Journal). (2019-06-10)

Think female race car drivers aren't fit enough? Think again
In the world of racing, the debate on whether women are as fit as men behind the wheel can often become heated. A new Michigan State University study, published in the journal Medicine and Science in Sports and Exercise, now has proof that women drivers, even with 10 years less experience, react and respond just as well as their male counterparts on the race track. (2019-04-04)

Annovera birth control vaginal ring effectively prevents unwanted pregnancy, research finds
A recently approved contraceptive vaginal ring -- the first that can be used for an entire year -- is a highly effective birth control method, according to clinical trial data that will be presented Tuesday at ENDO 2019, the Endocrine Society's annual meeting in New Orleans, La. (2019-03-26)

Endocrine disruptors alter female reproduction throughout multiple generations
Endocrine disruptors, hormone-altering chemicals that are widespread in our environment, can shape the brain through four generations, altering offspring's maternal behavior, sexual development and reproduction, according to a new animal study. The results of this study will be presented Monday at the Endocrine Society's annual meeting in New Orleans, La. (2019-03-25)

Improved PCOS symptoms correlate with gut bacterial composition
Symptoms of polycystic ovary syndrome (PCOS) improved with exposure to healthy bacteria in the gut, according to a study in a mouse model of this common women's endocrine disorder. The study results will be presented Monday at ENDO 2019, the Endocrine Society's annual meeting in New Orleans, La. (2019-03-23)

In healthy young women, sleep quality varies throughout the menstrual cycle
Young women are more likely to experience sleep disruption in the days leading up to their menstrual period, according to a new study that will be presented Saturday at ENDO 2019, the annual meeting of the Endocrine Society, in New Orleans, La. (2019-03-23)

Menstrual cycle phase influences cocaine craving
Menstrual cycle may influence addiction risk in women, according to a new study in Biological Psychiatry by researchers at the National Institute on Drug Abuse and University of Maryland School of Medicine. (2019-03-05)

Can prenatal exposures to BPA impact ovarian function?
While previous studies have shown the adverse health effects of prenatal exposure to the industrial chemical bisphenol A (BPA), there is little evidence surrounding effects specifically on ovarian function. A new study now finds there is sufficient data to raise concerns regarding exposure and ovarian performance. (2019-02-13)

Infertility treatment linked with slightly higher risk of pregnancy complications
Women who have undergone infertility treatment, such as in vitro fertilization, are more likely to experience severe pregnancy complications, according to new research published in CMAJ (Canadian Medical Association Journal). (2019-02-04)

Brigham researchers develop smartphone-based ovulation test
Artificial intelligence used to detect signs of ovulation in a woman's saliva automatically and at low cost. (2018-12-11)

Low-dose aspirin may lower ovarian cancer risk
Women who reported recent, regular use of low-dose aspirin (100 milligrams or less) had a 23 percent lower risk of developing ovarian cancer when compared with women who did not regularly take aspirin, according to new research led by Harvard T.H. Chan School of Public Health. The study also found that long-term heavy use of non-aspirin non-steroidal anti-inflammatory drugs (NSAIDs) may be associated with an increased risk of ovarian cancer. (2018-10-04)

Evidence mounts linking aspirin to lower risk of ovarian cancer
A new study found that women who reported taking a low-dose aspirin every day had a 23 percent lower risk of ovarian cancer compared to nonaspirin users. The research also found that women who were heavy users of nonaspirin nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen (Advil) or naproxen (Aleve), over a long period of time had a higher risk of developing ovarian cancer. (2018-10-04)

Cellular communication system in mice helps control female fertility
In new research published Aug. 2 in the journal PLOS Genetics, UW-Madison researchers discovered that two genes work together to construct a cellular communication system in the ovaries of mice to maintain healthy eggs. (2018-08-02)

New mums' voices get lower after pregnancy, shows a University of Sussex study
The pitch of new mothers' voices temporarily drops after they have had their first baby. (2018-05-30)

Male depression may lower pregnancy chances among infertile couples, NIH study suggests
Among couples being treated for infertility, depression in the male partner was linked to lower pregnancy chances, while depression in the female partner was not found to influence the rate of live birth, according to a study funded by the National Institutes of Health.The study, which appears in Fertility and Sterility, also linked a class of antidepressants known as non-selective serotonin reuptake inhibitors (non-SSRIs) to a higher risk of early pregnancy loss among females being treated for infertility. (2018-05-17)

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