James H. Barada Ejaculation, representing the physiologic means of semen and sperm delivery for reproduction has, until recently, received relatively little attention in the area of male sexual health. Yet, ejaculatory dysfunction, or male orgasmic disorder (MOD), is one of the most common male sexual disorders. The spectrum of MOD extends from premature ejaculation through various manifestatio...

BACKGROUND Candida species are microbial pathogens originally thought to be asexual, but several are now recognized as sexual or parasexual. Candida albicans, the most common fungus infecting humans, is an obligate diploid with a parasexual cycle involving mating, recombination, and genome reduction but no recognized meiosis. Others (C. lusitaniae, C. guilliermondii) are haploid, and their mati...

Interest in human sexuality began in the 18th century, but formal and more rigorous studies focused on sexual satisfaction and sexual practices were published in the early 1900s. Alfred Kinsey's pioneering work on sexuality, in which he surveyed over 10,000 men and women age 16 and older, began in the late 1930s. In the mid-1960s, Masters and Johnson published their seminal work characterizing ...

This review is designed to help the reproductive endocrinologist integrate his or her professional activity with those of other disciplines including urology, radiology, neurology, and psychology in order to successfully manage all of the inseparable aspects of male sexual and reproductive functioning. Significant advances in the field of male sexual physiology and pathophysiology and new metho...

Although asexual reproduction via clonal propagation has been proposed as the principal reproductive mechanism across parasitic protozoa of the Leishmania genus, sexual recombination has long been suspected, based on hybrid marker profiles detected in field isolates from different geographical locations. The recent experimental demonstration of a sexual cycle in Leishmania within sand flies has...

The aim of the study was to evaluate the efficiency, after 1 year, of combined use of psychodynamic psychotherapy integrating virtual reality (VR) for the treatment of erectile dysfunction (ED) and premature ejaculation (PE) in 160 heterosexual males who had neither any prior sexual therapy nor had made use (either before, during or after therapy) of any specific pharmaceuticals for the treatme...

Accurate inferences on population genetics data require a sound underlying theoretical null model. Organisms alternating sexual and asexual reproduction during their life-cycle have been largely neglected in theoretical population genetic models, thus limiting the biological interpretation of population genetics parameters measured in natural populations. In this article, we derive the expectat...

Evidence suggests that female sexual preferences change across the menstrual cycle. Women's extra-pair copulations tend to occur in their most fertile period, whereas their intra-pair copulations tend to be more evenly spread out across the cycle. This pattern is consistent with women preferentially seeking men who evidence phenotypic markers of genetic benefits just before and during ovulation...