Aug 20, 2016 · Basically, you shouldn't ever switch from anal to vaginal sex without using a new condom. "This is one of the regular points I always make when [patients ask] about anal intercourse,"...

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Kinsey Reporter is a global mobile app to share, explore, and visualize anonymous data about sex. Reports are submitted via smartphone, then visualized on a website or downloaded for offline analysis....

May 11, 2019 · Learn more about if anal sex can cause hemorrhoids. What? It’s a valid question and definitely worth knowing if you're a fan of anal sex.

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The state of the art on the issue of sex differences in research efficiency agrees in recognizing higher performances for males, however there are divergences in explaining the possible causes. One of...

Feb 23, 2019 · Bleeding after anal sex certainly isn't ideal. But is it normal? Here, experts explain what to know about bleeding after anal sex.

^Obligatory ^**NoT ^aLL ^mEn** Recently, there has been a massive amount of posts suggesting that sex-workers 'prey' or 'take advantage' of emotionally fragile men and con them for their money. Th...

The new dynamical game theoretic model of sex ratio evolution emphasizes the role of males as passive carriers of sex ratio genes. This shows inconsistency between population genetic models of sex rat...

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The management of endangered species as metapopulations is becoming increasingly common. Diverse aspects of metapopulation dynamics and management have received attention in recent years. In particula...

https://en.m.wikipedia.org/wiki/%C4%90or%C4%91e_Martinovi%C4%87_incident...

We give a counterexample to Theorem 9 in [T.K. Subrahmonian Moothathu, Syndetically proximal pairs, J. Math. Anal. Appl. 379 (2011) 656--663]. We also provide sufficient conditions for the conclusion ...

[Sexual activity without consent is sexual assault](https://en.wikipedia.org/wiki/Sexual_assault). [Some](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7878243/) (in fact, [many](https://canadianwomen....

The two classic theories for the existence of sexual replication are that sex purges deleterious mutations from a population, and that sex allows a population to adapt more rapidly to changing environ...

So like ten years ago I realized I was pretty vanilla in bed. But everything changed since the last time I was single. I know what I want and what I don’t. No anal, no slapping, no spitting and no c...

Dmrt1 is pivotal in testis formation and function by interacting with genes crucial for Sertoli cell differentiation. Dmrt1, or Sox9, forms a conserved antagonistic interaction with Foxl2 across mamma...

It's important to understand sexual consent because [sexual activity without consent is sexual assault](https://en.wikipedia.org/wiki/Sexual_assault). Before you flip out about how "everyone knows wha...

It has been suggested that the fundamental haploid-diploid cycle of eukaryotic sex exploits a rudimentary form of the Baldwin effect. This paper uses the well-known NKCS model to explore the effects o...

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Sex chromosomes have independently evolved in species with separate sexes in most lineages across the tree of life. However, the well-accepted canonical model of sex chromosome evolution is not univer...

It's important to understand sexual consent because [sexual activity without consent is sexual assault](https://en.wikipedia.org/wiki/Sexual_assault). [Some](https://www.ncbi.nlm.nih.gov/pmc/articles/...

Sex education helps children obtain knowledge and awareness of sexuality, and protects them against sexually transmitted diseases, pregnancy, and sexual abuse. Sex education is not well taught to chil...