Sex

Yes, at least in women. Using ultrasound to measure blood flow to the clitoris, Omer Faruk Karatas and colleagues at the University of Ankara (Turkey) concluded that female athletes, compared to sedentary female athletes, have greater blood flow to the clitoris - lo that improves orgasm- and better sexual function.

Thanks to new technologies, today it is possible to be connected at all hours and check email or social networks at any time. This makes many people unable to resist the temptation to enter their Factbook profile or check their Twitter account at all times. A study that will be published in the journal Psychological Science affirms that social networks cause more addiction than alcohol and tobacco.

The more sex we have, the more stress levels are reduced. This is clear from a recent study carried out by Benedetta Leuner and her colleagues from the Institute of Neuroscience at Princeton University (USA), which was reported in the scientific journal PLoS One.

A team from the CSIC has found the mechanism by which female seabass turn into males when the temperature increases. The effect would be related to the silencing of an enzyme responsible for the formation of female organs.

Normally human beings misinterpret the sexual signals of the opposite sex. At least that follows from a new American investigation. "There are many studies that show that men think that women are interested in them when they are not," explains Carin Perilloux, co-author of the study.

To get an erection, ostriches and emus lengthen their penises using lymphatic fluid, instead of blood like mammals and reptiles, according to a study published in the Journal of Zoology. To demonstrate this, the researchers dissected the genitalia of an adult ostrich (Struthio camelus) and three emus (Dromaius novaehollandiae).

This is the question that neuroscientist Barry Komisaruk of Rutgers University (USA) has been asking for some years. According to the account in the latest issue of the Journal of Sexual Medicine, in his latest study to find out, he placed 11 women of different ages in a nuclear magnetic resonance scan and invited them to self-stimulate the cervix, clitoris, vagina and nipples separately by hand or with a vibrator. Brain imaging revealed that there was an increase in different areas of the sensory cortex in the first three cases.

The spread of the human papillomavirus (HPV) by the practice of oral sex is currently the main cause of oropharyngeal cancer, that is, of tumors that originate in the back of the tongue, palate, tonsils or throat. This is deduced from a study funded by the US National Cancer Institute and published in the latest issue of the Journal of Clinical Oncology.