Researchers say
it's more than a wondering eye that might cause a woman to stray. Feelings of
lust actually may be rooted in a woman's biology, according to a small study of
38 college women in a scholarly journal Hormones and Behavior. Studies from the
University of California Los Angeles and New Mexico suggest an evolutionary
tendency toward infidelity during ovulation, which is the most fertile part of
the menstrual cycle. The study suggests the propensity is more likely if women
don't view their partners as sexy. Along those evolutionary lines, men, more
than women, desire a variety of sexual partners, because genes carrying that
trait were passed along in men. Women tend to be choosier. Previous research
has found that women at mid-cycle report greater sexual attraction to men other
than their partners. That's a result of ancestral belief that good looks often
equal good genes for offspring.
