Thought frequency by research: men and women
Women: 72% of their thoughts are about relationship; other 28% consists, pretty much in equal proportions, of aging, pets, man-thrashing, sex, food, things shouldn’t have eaten and have to pee.
Men: Sport (34%), career (27%), sex (24%); the remaining 15% includes, again roughly in equal proportions, relationship, going bald, ageing and strange ear and nose hair growth.
I think the research was conducted mainly in white/western population, so there could be some culture/ethnic variations (i.e. strange hair growth). However it does shed some light on how men and women are thinking different things for the most of the time.