When men outnumber women, females marry younger and the age gap between spouses grows, a University of Michigan study shows.
(PhysOrg.com) -- Promiscuous males are so intent on pursuing sexual partners that they can neglect even essential tasks such as eating, says a new study published in the Journal of Evolutionary Biology.
Girls are hitting puberty earlier and earlier. One recent study found that more than 10 percent of American girls have some breast development by age 7. This news has upset many people, but it may make evolutionary sense ...
(PhysOrg.com) -- Men who make less money than their female partners are more likely to be unfaithful, according to a new study.
(PhysOrg.com) -- Females with fewer sexual partners can explain where bird species have evolved to cooperate in the rearing of their young, according to Oxford University research.
The context in which adolescent sexual activity occurs can substantially moderate the negative relationship between sexual intercourse and education, according to research to be presented at the 105th Annual Meeting of the ...
As more women wait until their 30s and 40s to have children, they are more willing to engage in a variety of sexual activities to capitalize on their remaining childbearing years, according to new research by psychologists ...
Vaccination against the virus that causes cervical cancer has had an additional benefit - a marked decline in cases of genital warts, a new study has found.
Being obese impacts on sexual health according to research published in the British Medical Journal today.
Scientists at the University of Liverpool have discovered that male topi antelopes deceive their female counterparts in order to increase their chances of mating.