Log in to search using one of your social media accounts:

 

Men Masturbated For Science, And Here's What Came Of It

 They say variety is the spice of life, and provocative new research by scientists in Ohio suggests that that holds true in the world of human sex and reproduction. With the help of 21 men and some porn videos, The College of Wooster researchers showed that guys ejaculate faster and produce more, higher-quality sperm when they masturbate to a "novel female stimulus." In other words, they really get off with a hot woman they've never previously encountered. The finding doesn't mean that men are somehow programmed to cheat on their girlfriends and wives. It may suggest that men have evolved such that it's easier for them to have sex with (and impregnate) other women without their usual partners finding out. As study co-author Dr. Laura K. Sirot, assistant professor of biology at the college, told The Huffington Post in an email, "Our study does not suggest anything about whether monogamy was favored or disfavored by natural selection. However, the results of this study and other studies of human differential ejaculation behavior suggest that extra-pair (or extramarital) copulations may have occurred in our evolutionary past." In addition to providing new insights into evolutionary biology, the finding may lead to better detection and treatment of male infertility. When men see a doctor about fertility problems, they often provide semen samples collected while masturbating to porn. And since it features novel women, "the ejaculates produce...
Source: Science - The Huffington Post - Category: Science Source Type: news

Related Links:

Male chronic alcohol abuse causes testicular failure and infertility. We analyzed the effects of moderate sub-chronic alcohol intake on sperm morphology, capacitation, fertilization and sperm head decondensation. CF-1 male mice were administered 15% ethanol in drinking water for 15 days; control mice received ethanol-free water. Similar patterns of tyrosine phosphorylation were observed in capacitated spermatozoa of control and treated males. Percentage of hyperactivation (H) and spontaneous (SAR) and progesterone-induced (IAR) acrosome reaction significantly decreased at 120 and 150 min of capacitation in treated males co...
Source: Reproduction - Category: Reproduction Medicine Authors: Tags: Research Source Type: research
Conclusion: A considerable knowledge gap about the factors that influence fertility was identified in reproductive-age individuals in an urban area of Thailand. This issue should be urgently addressed by promoting fertility awareness through education, discussions about social perceptions regarding fertility, and reliable sources of knowledge. PMID: 29662824 [PubMed]
Source: Clinical and Experimental Reproductive Medicine - Category: Reproduction Medicine Tags: Clin Exp Reprod Med Source Type: research
Conclusion The major lifestyle factors discussed in the present review are amongst the multiple potential risk factors that could impair male fertility. However, their negative impact may well be mostly overcome by behaviour modification and better lifestyle choices. Greater awareness and recognition of the possible impact of these lifestyle factors are important amongst couples seeking conception.
Source: Arab Journal of Urology - Category: Urology & Nephrology Source Type: research
ConclusionsPerceived stress, infertility‐related stress, and cortisol levels were not associated with IVF cycle outcomes. These findings are potentially reassuring to women undergoing fertility treatment with concerns about the influence of stress on their treatment outcome.This article is protected by copyright. All rights reserved.
Source: Acta Obstetricia et Gynecologica Scandinavica - Category: OBGYN Authors: Tags: Original Research Article Source Type: research
Authors: Purewal S, Chapman SCE, van den Akker OBA Abstract OBJECTIVE: Lifestyle (smoking, drinking alcohol) and body mass index (BMI) predictors of successful outcomes in assisted reproductive technology (ART) treatments were examined in this meta-analysis. METHOD: A bibliographic search was undertaken using six databases. The review was informed by PRISMA/MOOSE guidelines. Meta-analytic data were analysed using random effects models. RESULTS: We included 77 studies examining effects of BMI, smoking and drinking alcohol. Patients with a BMI =25 OR = 1.219 (95% CI:1.128-1.319, z ...
Source: Journal of Psychosomatic Obstetrics and Gynaecology - Category: OBGYN Tags: J Psychosom Obstet Gynaecol Source Type: research
This study included 108 male infertile patients with normal range of sperm conventional parameters but with unexplained infertility in assisted reproductive technologies programme. Firstly, OS was analysed based on lipid peroxidation (MDA) and EAO which included catalase (CAT), superoxide dismutase (SOD) and glutathione reductase (GR). Secondly, we evaluated DNA fragmentation by TUNEL assay and chromatin decondensation by aniline blue colouration. The whole lot was divided into four groups: control (nonalcoholic and nonsmoker patients), alcohol group, smoking group and alcohol‐smoking group. The results showed, in three ...
Source: Andrologia - Category: Urology & Nephrology Authors: Tags: ORIGINAL ARTICLE Source Type: research
This report presents baseline estimates of the use of these preventive services before the publication of QFP that can be used to monitor progress toward improving the quality of preventive care received by women and men of reproductive age. PERIOD COVERED: 2011-2013. DESCRIPTION OF THE SYSTEM: Three surveillance systems were used to document receipt of preventive health services among women and men of reproductive age as recommended in QFP. The National Survey of Family Growth (NSFG) collects data on factors that influence reproductive health in the United States since 1973, with a focus on fertility, sexual act...
Source: MMWR Surveill Summ - Category: Epidemiology Authors: Tags: MMWR Surveill Summ Source Type: research
Authors: Salih Joelsson L, Tydén T, Wanggren K, Georgakis MK, Stern J, Berglund A, Skalkidou A Abstract BACKGROUND: Infertility has been associated with psychological distress, but whether these symptoms persist after achieving pregnancy via assisted reproductive technology (ART) remains unclear. We compared the prevalence of anxiety and depressive symptoms between women seeking for infertility treatment and women who conceived after ART or naturally. METHODS: Four hundred and sixty-eight sub-fertile non-pregnant women, 2972 naturally pregnant women and 143 women pregnant after ART completed a questionna...
Source: Journal of the Association of European Psychiatrists - Category: Psychiatry Tags: Eur Psychiatry Source Type: research
LITFL • Life in the Fast Lane Medical Blog LITFL • Life in the Fast Lane Medical Blog - Emergency medicine and critical care medical education blog Just when you thought your brain could unwind on a Friday, you realise that it would rather be challenged with some good old fashioned medical trivia FFFF…introducing Funtabulously Frivolous Friday Five 205. Question 1 Meigs’ Syndrome resolves after removal of the tumour. What is the classic triad of Meigs’ Syndrome? + Reveal the Funtabulous Answer expand(document.getElementById('ddet771338363'));expand(document.getElementById('ddetli...
Source: Life in the Fast Lane - Category: Emergency Medicine Authors: Tags: Frivolous Friday Five allergic bronchopulmonary aspergillosis Argyll Robertson aspergilloma aspergillus Calabar extrinsic allergic alveolitis invasive aspergillosis kartagener's syndrome liver Loa loa worms Meigs syndrome ocular oa Source Type: blogs
AbstractSTUDY QUESTIONIs pre-treatment alcohol and caffeine intake associated with infertility treatment outcomes among women undergoing ART?SUMMARY ANSWERLow to moderate alcohol and caffeine intakes in the year prior to infertility treatment were not related to ART outcomes.WHAT IS KNOWN ALREADYAlcohol and caffeine intake have been found to be associated with infertility in some studies. Nevertheless, data on their relation with outcomes of infertility treatments are scarce and inconsistent.STUDY DESIGN, SIZE, DURATIONWe included 300 women (493 ART cycles) from the Environment and Reproductive Health Study, an ongoing coh...
Source: Human Reproduction - Category: Reproduction Medicine Source Type: research
More News: Alcoholism | Biology | Graduation | Infertility | Psychology | Reproduction Medicine | Science | Study | Websites | Women