Each week a woman consumes alcohol during the first five to 10 weeks of pregnancy is associated with an incremental 8% increase in risk of miscarriage, according to a study by Vanderbilt University Medical Center (VUMC) researchers.
A new analysis of sibling records from more than 300,000 individuals suggests that some parents continue to reproduce until they have children of both sexes.
Coronary artery disease (CAD) is a leading cause of death in both men and women. Women are more susceptible to CAD during the menopause transition because of loss of ovarian function leading to estrogen deficiency. A new study suggests the risk of CAD could be identified earlier by looking at reproductive risk factors. Study results are published online today in Menopause, the journal of The North American Menopause Society (NAMS).
New research published today in The Journal of Physiology shows that giving sildenafil (Viagra), which cause blood vessels to dilate, impairs the fetus' ability to redirect blood flow to essential organs in response to low levels of oxygen, impeding fetal growth. This study was conducted in an animal model of growth restriction where placental blood flow is restricted.
Penile microbiome composition can vary; however, the presence of some bacterial vaginosis-related bacteria correlates with bacterial vaginosis onset in their female partners. Results highlight 10 bacteria that could be used to accurately predict bacterial vaginosis incidence in women. The study suggests that treatment manipulating the penile microbiome may reduce BV incidence in sex partners.
A breakthrough in fertility science by researchers from Bristol and Mexico has shattered the universally accepted view of how sperm 'swim'.
The study, published in Science Advances, reveals that cells can detect the presence of different mitochondrial genomes and select among them according to their effect on metabolic status
Millions of women have been taking oral contraceptives, but little is known about whether the synthetic hormones found in the oral contraceptives have behavioural and neurophysiological effects, especially during puberty and early adolescence, which are critical periods of brain development. A uOttawa team of researchers found that oral contraceptive use is related to significant structural changes in brain regions implicated in memory and emotional processing. It also alters stress reactivity.
A pair of recently published studies analyzed how ovarian function in mice responded to various levels of exposure to glyphosate, a chemical extensively used to kill weeds. The results showed exposure changed the level of some ovarian proteins but did not impact ovarian steroid production, an indication glyphosate may not adversely affect reproduction.
Researchers from the Rovira i Virgili University in collaboration with researchers from the University of Utah have carried out a systematic review and meta-analysis evaluating the association between adiposity (normal weight, overweight, obesity, and low weight) and the sperm quality. Overweight and/or obesity were associated with low semen quality parameters and underweight category was likewise associated with low sperm normal morphology. According to the researchers, this work demonstrates the importance of adiposity in semen quality.