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Seniors Have Rewarding Sex LivesEven for the elderly, men have more sex than women.
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The 9 Most Provocative Sex Science Stories of 2009As 2009 comes to a close, LiveScience looks back at the year's nine most intriguing sex lessons.
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Why Some Men Can't Control Arousal
Men who can regulate their sexual arousal can also control their other emotions.
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Spiritual Women Have More SexNew research has found that spirituality has a greater effect on the sex lives of young adults.
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Sex Change Operations: The Science, Sociology and PsychologyGender-reassignment surgery addresses larger issues of gender, sexuality and sexual orientation.
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The Risks of Summer SexUnsexy as it sounds, there are some health risks and practical concerns associated with summertime sex.
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Antioxidants Boost Sperm QualityMen who ate antioxidant-rich fruits and vegetables have better rates of sperm movement, ejaculate volume, and sperm concentration.
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Leaders Called Upon to Support Sexual HealthThe tenets of sexual health need to be addressed and upheld, and political and religious leaders should lead the charge.
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Involved Dads Lower Their Kids' Sex RisksA new study finds that the involvement of fathers lowers risky sexual behavior in teenagers.
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How Safe Is the Pill?While oral contraceptives are effective in reducing the risk of unwanted pregnancy, its effects on the human body – both good and bad – have been cause for debate.
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Effects of Infidelity on Men vs. Women Surprise ResearchersA recent study discovered that men feel guiltier following sexual infidelity, while women feel guiltier after emotional transgression.
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Basis for Male Promiscuity QuestionedA new study on reproductive success finds that humans don’t always conform to the roles of "promiscuous" males and "selective" females.
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Some Men Prefer Fat WomenA recent study finds that not only do some men prefer overweight women, but that they also find a wide range of body sizes attractive.
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The 10 Most Surprising Sex StatisticsWhether it's penis size, papillomavirus risk, or profligate pregnancies, it's good to know the numbers.
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Survey Finds 'Friends with Benefits' CommonHow well do "friends with benefits" relationships work?
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The Truth on Whether 'Opposites Attract'A new study finds that when it comes to personality, people seek partners with their same qualities.
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Why Some Women Find Sex PainfulResearch suggests women's pain during sex should be reclassified as a pain disorder rather than a sexual dysfunction.
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Focusing on Sexual Desire Can Ruin ItWomen who pay too much attention to their performance during sex could be inhibiting sexual desire.
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Sex Sells, But Who's Buying?Sex in advertising? Women aren't buying it.
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What Modern Men Want in WomenWhat do men want in a woman? Brains? Beauty? Vacuuming prowess?
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Everyone Agrees: Women Are Hard to ReadBoth men and women are able to gauge a man’s interest in a woman, but are equally baffled when it comes to figuring out if a woman is interested in a man.
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Women's Brains Respond to Manly MenA new study finds that the brains of hormonal women respond to men with overtly masculine facial features.
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Mating Game Is a Waiting GameExtended courtships allow females to screen for potential providers, while males can prove they're suitable.
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New 'Joy of Sex' Slim on ScienceEven updated, "The Joy of Sex" is by no means a scientific treatise: its most popular section will likely remain "Main Courses."
