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

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Publication date: Available online 24 July 2018Source: Life SciencesAuthor(s): Kumari Nishi, Sabitha Ramakrishnan, Vinoth Prasanna Gunasekaran, Kaushal Parkash, Arumugan Ramakrishnan, Natesan VijayKumar, Mathan GaneshanAbstractAlcohol, a psychoactive drug is one of the lifestyle factors responsible for male infertility. Present study was carried out to investigate the ameliorative effect of p‑coumaric acid (PCA), a plant derived bioactive phenolic compound on alcohol induced chronic reproductive toxicity in male rats. Thirty male Wistar rats were divided into five groups, each with six animals. Group I as control receive...
Source: Life Sciences - Category: Biology Source Type: research
ConclusionThe 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
We examined relationships and differences between Co, Cr, and Pb concentrations in seminal plasma, CAT activity, and semen parameters. We did not establish differences in Co, Cr, and Pb concentrations and CAT activity from men between normozoospermic and those with pathological spermiogram. We found a significantly lower Co concentration and CAT activity in males with normal sperm motility than in asthenozoospermic males. We found significantly lower Co and a higher Pb concentration in males with normal morphology of spermatozoa than in teratozoospermic males. We found a significantly higher Pb concentration in the individ...
Source: Biological Trace Element Research - Category: Biology Authors: Tags: Biol Trace Elem Res Source Type: research
Authors: Aboud HM, Hassan AH, Ali AA, Abdel-Razik AH Abstract Sildenafil citrate (SIL), a type 5-specific phosphodiesterase inhibitor, demonstrates valuable results in the management of infertility in women; however, the absence of vaginal dosage form in addition to the associated oral adverse effects minimize its clinical performance. The present study is concerned with SIL uterine targeting following intravaginal administration via optimization of cubosomal in situ gelling sponges (CIS). An emulsification method was employed for preparation of cubosomal dispersions incorporating glyceryl monooleate as a lipid pha...
Source: Drug Delivery - Category: Drugs & Pharmacology Tags: Drug Deliv Source Type: research
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
AbstractSTUDY QUESTIONIs maternal polycystic ovarian syndrome (PCOS) associated with developmental delays in offspring?SUMMARY ANSWEROffspring of mothers with PCOS were at higher risk of failure on the Ages and Stages Questionnaire (ASQ).WHAT IS KNOWN ALREADYThere is growing evidence that offspring of mothers with PCOS may be at higher risk for developmental disorders due to potential exposure to hyperandrogenism and insulin resistance. Few studies exist regarding maternal PCOS and early childhood development in the USA.STUDY DESIGN, SIZE, DURATIONThe Upstate KIDS Study is a population-based prospective cohort study of inf...
Source: Human Reproduction - Category: Reproduction Medicine 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
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