New data, published today in Menopause International, suggests that post-menopausal women in Britain are experiencing less sex, and less satisfying sex compared to their European and North American counterparts1, because they a ...
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Women say they place a priority on a potential partner's earning prospects, and men claim to value a potential partner's physical attractiveness; these sex differences have been widely studied by psychologists for decades.
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A survey of adult South African men published in this week's PLOS Medicine, shows that while overlapping sexual relationships with women appear to be common, roughly one in 20 men reported consensual sexual contact with a ...
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Hormonal therapy for transsexual patients is safe and effective, a multicenter European study indicates. The results will be presented Saturday at The Endocrine Society's 95th Annual Meeting in San Francisco.
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A new drug called pyrvinium pamoate inhibits aggressive forms of prostate cancer that are resistant to standard drugs, according to a study conducted in an animal model. The results will be presented Monday at The Endocrine ...
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A mother's exposure to triclocarban, a common antibacterial chemical, while nursing her babies shortens the life of her female offspring, a new study in rats finds. The results were presented Monday at The Endocrine Society's ...
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Hormone treatment to halt puberty in adolescents with gender identity disorder does not cause lasting harm to their bones, a new study finds. The results were presented today at The Endocrine Society's 95th Annual Meeting ...
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High doses of testosterone significantly improve sexual function among women who have had their uterus and ovaries surgically removed, a clinical study demonstrates. The results were presented Sunday at The Endocrine Society's ...
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Women with polycystic ovary syndrome, or PCOS, lost significantly more weight when they took two drugs that are traditionally used to treat diabetes, rather than either drug alone, a study from Slovenia demonstrates. The ...
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HIV prevention programs for female sex workers in India reduce rates of syphilis, HIV and other sexually transmitted infections (STIs), a University of Toronto study has found.
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New research published today in Biology Letters reveals that men are significantly better than women at assessing someone's body size from the sound of their speech.
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People will lie about their sexual behavior to match cultural expectations about how men or women should act – even though they wouldn't distort other gender-related behaviors, new research suggests.
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New research from McMaster University suggests women can remember faces better than men, in part because they spend more time studying features without even knowing it, and a technique researchers say can ...
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(Medical Xpress)—Taking tamoxifen for 10 rather than five years halves the risk of women dying from the most common kind of breast cancer, according to new research being presented at this year's ASCO conference. ...
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A satisfying sex life is an important contributor to older adults' quality of life, but the sexual pain that can come after menopause can rob women and their partners of that satisfaction. Treatment can help restore it, shows ...
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In biology, sex is a process of combining and mixing genetic traits, often resulting in the specialization of organisms into male and female types (or sexes). Sexual reproduction involves combining specialized cells (gametes) to form offspring that inherit traits from both parents. Gametes can be identical in form and function (known as isogametes), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist: male gametes are small, motile, and optimized to transport their genetic information over a distance, while female gametes are large, non-motile and contain the nutrients necessary for the early development of the young organism.
An organism's sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic. Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.
This text uses material from Wikipedia licensed under CC BY-SA
