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Sexuality, Sex and Aging

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https://www.readbyqxmd.com/read/27919289/correlates-of-sex-trading-among-male-non-injecting-drug-users-in-myanmar-a-cross-sectional-study
#1
Yu Mon Saw, Thu Nandar Saw, Kyi Mar Wai, Krishna C Poudel, Hla Hla Win
BACKGROUND: Sex trading is a recognized risk factor for human immune deficiency virus infection and other sexually transmitted infections among non-injecting drug users (NIDUs). However, very little research has addressed the factors associated with sex trading among male NIDUs in Myanmar. METHODS: A cross-sectional study was conducted from January to February 2010 using the respondent-driven sampling method. In total, 210 NIDUs aged between 18 and 49 years, with no history of injecting drug use, and who used non-injected illicit drugs in the last 6 months were recruited...
December 5, 2016: Harm Reduction Journal
https://www.readbyqxmd.com/read/27918172/an-experimental-test-of-the-bridges-to-high-school-intervention-on-harsh-parenting-and-early-age-intercourse-among-mexican-american-adolescents
#2
Miguelina Germán, Nancy A Gonzales, Stephen G West, Lorey A Wheeler
OBJECTIVE: Can an intervention that contained no content on sex or contraception reduce rates of early-age intercourse among Mexican American adolescents? The current study examined whether the Bridges to High School intervention designed, in part, to decrease harsh parenting, had a longitudinal effect on decreasing rates of early-age intercourse in the treatment versus control groups, as well as the moderating role of gender and linguistic acculturation. METHOD: The sample consisted of 516 Mexican American adolescents (Mage = 12...
December 5, 2016: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/27916832/anthropometric-measurements-serum-reproductive-hormonal-levels-and-sexual-development-among-boys-in-the-rural-western-cape-south-africa
#3
Jun Mao, Mohamed Aqiel Dalvie
Data on growth and sexual maturation among boys from the rural Western Cape in South Africa is limited. A cross-sectional study of 269 school boys was conducted testing for serum luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone, sex hormone binding globulin (SHBG) and estradiol (E2); height, weight and body mass index (BMI); sexual maturity (using Tanner Stages) and a questionnaire (demographic and medical history). The median age at pubertal onset (Tanner Stage 2) and Tanner Stage 5 was 11...
November 29, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27916526/the-mitochondrial-lon-protease-is-required-for-age-specific-and-sex-specific-adaptation-to-oxidative-stress
#4
Laura C D Pomatto, Caroline Carney, Brenda Shen, Sarah Wong, Kelly Halaszynski, Matthew P Salomon, Kelvin J A Davies, John Tower
Multiple human diseases involving chronic oxidative stress show a significant sex bias, including neurodegenerative diseases, cancer, immune dysfunction, diabetes, and cardiovascular disease. However, a possible molecular mechanism for the sex bias in physiological adaptation to oxidative stress remains unclear. Here, we report that Drosophila melanogaster females but not males adapt to hydrogen peroxide stress, whereas males but not females adapt to paraquat (superoxide) stress. Stress adaptation in each sex requires the conserved mitochondrial Lon protease and is associated with sex-specific expression of Lon protein isoforms and proteolytic activity...
November 23, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27916327/does-keeping-adolescent-girls-in-school-protect-against-sexual-violence-quasi-experimental-evidence-from-east-and-southern-africa
#5
Julia Andrea Behrman, Amber Peterman, Tia Palermo
PURPOSE: We examine the relationship between educational attainment in adolescence on young women's lifetime experience of sexual violence in Malawi and Uganda. METHODS: Exposure to Universal Primary Education policies in the mid-1990s serves as a natural experiment to estimate the causal effect of schooling on women's subsequent experience of sexual violence using an instrumented regression discontinuity design and Demographic and Health Survey data. RESULTS: We find a one-year increase in grade attainment leads to a nine-percentage point reduction (p < ...
December 1, 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/27913759/older-women-in-new-romantic-relationships-understanding-the-meaning-and-importance-of-sex-in-later-life
#6
Wendy K Watson, Charlie Stelle, Nancy Bell
Although research has found that sexual activity declines with age, most of this literature examines people in long-term marriages. Little is known about the initiation of new sexual relationships in later life. In-depth interviews with 14 women aged 64 to 77 years were conducted to examine their personal and collective narratives regarding sexuality in later life. In contrast to common perceptions, none of the participants felt that aging had negatively impacted their own sexuality. For many, this was a time in their lives when they were experiencing renewed sexual desire and enjoyment...
December 2, 2016: International Journal of Aging & Human Development
https://www.readbyqxmd.com/read/27912908/childhood-sexual-abuse-and-substance-abuse-a-gender-paradox
#7
Lil Tonmyr, Margot Shields
We examine associations between childhood sexual abuse (CSA) and substance abuse, the role of mental health indicators as mediators in these associations and whether or not associations differ by gender. Data are from 14,063 respondents aged 18-76 years from the 2004-2005 Canadian Gender, Alcohol, and Culture: An International Study (GENACIS). Multiple logistic regression models were used to examine associations between CSA and substance abuse variables, controlling for socio-demographic factors. Odds were adjusted by indicators of mental health to assess if these variables mediated associations between CSA and substance abuse...
November 29, 2016: Child Abuse & Neglect
https://www.readbyqxmd.com/read/27911671/exploring-first-sexual-intercourse-sexual-orientation-and-sexual-health-in-men
#8
Alexis Dewaele, Mieke Van Houtte, Katrien Symons, Ann Buysse
In this study the characteristics of the sexual debut of men who have sex with men (MSM) and men who have sex with women (MSW) age 35 or younger (N = 1,201) were compared with one another. We investigated whether these characteristics were associated with sexual health and behavior, and to what extent. Compared to MSW, MSM tended to be older when they had their first sexual intercourse; their first sex partner was older, they felt less ready, and they experienced more pain. We also found that they reported a higher number of lifetime sexual partners and less condom use compared to MSW...
December 2, 2016: Journal of Homosexuality
https://www.readbyqxmd.com/read/27909236/sexual-risk-behaviors-of-african-american-adolescent-females-the-role-of-cognitive-and-religious-factors
#9
Safiya George Dalmida, Natasha Aduloju-Ajijola, Dora Clayton-Jones, Tami L Thomas, Ricardo J Erazo Toscano, Rashunda Lewis, Terri Fleming, Shirley Taylor, Macie Lunyong
INTRODUCTION: African American (AA) high school-age girls are more likely to have had sex before age 13 years and have higher rates of all sexually transmitted infections. Cognition and religion/spirituality are associated with adolescent sexuality, therefore, the purpose of this study was to identify cognitive and religious substrates of AA girls' risky sexual behaviors. METHOD: A descriptive study was conducted with 65 AA girls aged 15 to 20 years using computerized questionnaires and cognitive function tasks...
November 30, 2016: Journal of Transcultural Nursing: Official Journal of the Transcultural Nursing Society
https://www.readbyqxmd.com/read/27908293/autosomal-genetic-control-of-human-gene-expression-does-not-differ-across-the-sexes
#10
Irfahan Kassam, Luke Lloyd-Jones, Alexander Holloway, Kerrin S Small, Biao Zeng, Andrew Bakshi, Andres Metspalu, Greg Gibson, Tim D Spector, Tonu Esko, Grant W Montgomery, Joseph E Powell, Jian Yang, Peter M Visscher, Allan F McRae
BACKGROUND: Despite their nearly identical genomes, males and females differ in risk, incidence, prevalence, severity and age-at-onset of many diseases. Sexual dimorphism is also seen in human autosomal gene expression, and has largely been explored by examining the contribution of genotype-by-sex interactions to variation in gene expression. RESULTS: In this study, we use data from a mixture of pedigree and unrelated individuals with verified European ancestry to investigate the sex-specific genetic architecture of gene expression measured in whole blood across n=1048 males and n=1005 females by treating gene expression intensities in the sexes as two distinct traits and estimating the genetic correlation (r G) between them...
December 1, 2016: Genome Biology
https://www.readbyqxmd.com/read/27906980/patterns-of-sexual-behavior-in-lowland-thai-youth-and-ethnic-minorities-attending-high-school-in-rural-chiang-mai-thailand
#11
Linda Aurpibul, Arunrat Tangmunkongvorakul, Patou Masika Musumari, Kriengkrai Srithanaviboonchai, Surapee Tarnkehard
INTRODUCTION: The rural areas of Northern Thailand are home to a large cultural diversity of ethnic minority groups. Previous studies have shown that young people in rural Thailand have low levels of knowledge on HIV/AIDS and high sexual risks. We compared sexual behaviors between the lowland Thai youth and the youth from ethnic minority groups. METHODS AND FINDINGS: This is a cross-sectional quantitative study conducted among high-school Thai and ethnic students in Chiang Mai...
2016: PloS One
https://www.readbyqxmd.com/read/27905014/sexual-venue-choice-and-sexual-risk-taking-among-substance-using-men-who-have-sex-with-men
#12
Joshua A Rusow, Jesse B Fletcher, Cathy J Reback
Commercial sex venues (CSVs) and public sex environments (PSEs) offer men who have sex with men (MSM) sexual privacy and anonymity. Sociodemographic characteristics (e.g., race/ethnicity, sexual identity, age, HIV status) are correlated with individuals' choice of sexual venue, potentially suggesting environmental associations with both sociodemographics and sexual risk. From March 2005 through March 2012, 1298 substance-using MSM provided information on their most recent sexual encounter; iterative logit models estimated associations between sociodemographics and sexual venue, and/or whether sexual venue was associated with sexual risk-taking while controlling for sociodemographics...
November 30, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/27904806/dominance-relationships-in-a-family-pack-of-captive-arctic-wolves-canis-lupus-arctos-the-influence-of-competition-for-food-age-and-sex
#13
Simona Cafazzo, Martina Lazzaroni, Sarah Marshall-Pescini
BACKGROUND: Dominance is one of the most pervasive concepts in the study of wolf social behaviour but recently its validity has been questioned. For some authors, the bonds between members of wolf families are better described as parent-offspring relationships and the concept of dominance should be used just to evaluate the social dynamics of non-familial captive pack members (e.g., Mech & Cluff, 2010). However, there is a dearth of studies investigating dominance relationships and its correlates in wolf family packs...
2016: PeerJ
https://www.readbyqxmd.com/read/27903356/-predictors-of-rush-popper-use-among-825-men-who-have-sex-with-men-in-education-in-guangdong-province
#14
M Q Chen, W B Cheng, H F Xu, Y S Cai, L R Fan, F Zhong, X Chen, W Jin, X B Chen, J Y Li
Objective: To explore prevalence and predictors of the use of Rush poppers among men who have sex with men in education in Guangdong Province. Methods: An internet survey was conducted via a gay website from March to August 2014 and a sample of 833 male respondents over 16 years who had ever had anal sex with a male, studied in Guangdong Province and who had completed an online questionnaire was identified- of which 93.4% (n=825) provided valid responses and were included in the study. Respondents provided information on their socio-demographic characteristics, HIV testing history, sexual activity in last 3 months, Rush poppers use and time since first sexual encounter with a male...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27903355/-factors-associated-with-commercial-sexual-behavior-among-men-who-have-sex-with-men-in-shenzhen-china-in-2011-2015
#15
Y M Cai, Y J Song, H Liu, F C Hong
Objective: To investigate the status and factors associated with commercial sexual behavior among men who have sex with men (MSM) in Shenzhen. Methods: A convenience sampling method was used to recruit MSM in Shenzhen from 2011 to 2015. Questionnaire-based interviews were conducted on a one-on-one basis. Data were collected, including socio-demographic information, HIV testing history, history of blood donation and drug abuse in the last 2 years, self-reported sexual orientation, role in homosexual behavior, and experience serving as a male sex worker and/or as a client of male sex workers...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27902778/an-insecticide-further-enhances-experience-dependent-increased-behavioural-responses-to-sex-pheromone-in-a-pest-insect
#16
Antoine Abrieux, Amel Mhamdi, Kaouther K Rabhi, Julie Egon, Stéphane Debernard, Line Duportets, Hélène Tricoire-Leignel, Sylvia Anton, Christophe Gadenne
Neonicotinoid insecticides are widely used to protect plants against pest insects, and insecticide residues remaining in the environment affect both target and non-target organisms. Whereas low doses of neonicotinoids have been shown to disturb the behaviour of pollinating insects, recent studies have revealed that a low dose of the neonicotinoid clothianidin can improve behavioural and neuronal sex pheromone responses in a pest insect, the male moth Agrotis ipsilon, and thus potentially improve reproduction...
2016: PloS One
https://www.readbyqxmd.com/read/27902759/seroprevalence-and-associated-factors-of-9-valent-human-papillomavirus-hpv-types-among-men-in-the-multinational-him-study
#17
Shams Rahman, Christine M Pierce Campbell, Dana E Rollison, Wei Wang, Tim Waterboer, Angelika Michel, Michael Pawlita, Luisa L Villa, Eduardo Lazcano Ponce, Amy R Borenstein, Anna R Giuliano
BACKGROUND: Human papillomavirus (HPV) is one of the most common sexually transmitted infections worldwide. Recently a 9-valent HPV (9vHPV) prophylactic vaccine was licensed. Seroprevalence prior to vaccine dissemination is needed for monitoring vaccine effectiveness over time. Few studies have assessed the seroprevalence of 9vHPV types in men. OBJECTIVES: To investigate the seroprevalence of 9vHPV vaccine types and associated risk factors among men residing in Brazil, Mexico, and the United States...
2016: PloS One
https://www.readbyqxmd.com/read/27899728/evolution-of-sex-differences-in-trait-and-age-specific-vulnerabilities
#18
David C Geary
Traits that facilitate competition for reproductive resources or that influence mate choice generally have a heightened sensitivity to stressors. They have evolved to signal resilience to infectious disease and nutritional and social stressors, and they are compromised by exposure to man-made toxins. Although these traits can differ from one species or sex to the next, an understanding of the dynamics of competition and choice can in theory be used to generate a priori predictions about sex-, age-, and trait-specific vulnerabilities for any sexually reproducing species...
November 2016: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/27899688/source-of-sex-information-and-condom-use-intention-among-latino-adolescents
#19
Jillian S Eversole, Nancy F Berglas, Julianna Deardorff, Norman A Constantine
Adolescence is a common time for sexual initiation and information seeking about sexual health, yet little is known about how adolescents' sources of information about sex influence their sexual beliefs and behaviors. This is particularly true for Latino adolescents, whose sources of sex information and sexual behaviors are vastly understudied. A survey of ninth-grade Latino adolescents (N = 1,186) was employed to examine the relationship between adolescents' primary source of sex information and their intention to use condoms...
November 29, 2016: Health Education & Behavior: the Official Publication of the Society for Public Health Education
https://www.readbyqxmd.com/read/27898576/sexually-transmitted-disease-testing-and-uptake-of-human-papillomavirus-vaccine-in-a-large-online-survey-of-us-men-who-have-sex-with-men-at-risk-for-hiv-infection-2012
#20
Erin M Kahle, Elissa Meites, R Craig Sineath, Muazzam Nasrullah, Kristina E Bowles, Elizabeth DiNenno, Patrick S Sullivan, Travis Sanchez
National guidelines recommend annual human immunodeficiency virus (HIV)/sexually transmitted disease testing for sexually active men who have sex with men (MSM) and vaccination against human papillomavirus for MSM through age 26. A 2012 online survey of 2,794 MSM found that 51%, 36%, and 14% reported receiving human immunodeficiency virus testing, sexually transmitted disease testing, and human papillomavirus vaccination, respectively.
November 28, 2016: Sexually Transmitted Diseases
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