SEX A social status usually based on genital appearance. Persons may be female, male, or intersex. Persons may be women or girls, boys or men, who are cisgender, trans, or non-binary. They may feel themselves to be neither gender, to be both genders, or to be a gender other than what their sex would normally dictate. Persons may be trans or non-binary on the basis of only their feelings about themselves, they may appear ambiguously gendered to others, or they may change their gender and live unnoticed as another gender. Gender Blending: Confronting the Limits of Duality.
Aaron H. Devor, Ph.D.
The Mammalian Myosin Heavy Chain Gene Family and Muscle Fiber Types
The new concept of evidence-based sex and gender medicine—which includes the fundamental differences of biology and behaviour between women and men—should improve health care for both sexes. Men and women are alike in many ways. However, there are important biological and behavioural differences between the two genders. They affect manifestation, epidemiology and pathophysiology of many widespread diseases and the approach to health care. Despite our knowledge of these crucial differences, there is little gender-specific health care; the prevention, management and therapeutic treatment of many common diseases does not reflect the most obvious and most important risk factors for the patient: sex and gender. Addressing gender in health and health care therefore requires new approaches at many levels, from training medical personal to clinical medicine, epidemiology and drug development. To discuss and address properly the differences in health and health care between men and women, it is necessary to distinguish between sex and gender and their respective effects on health. Sex differences are based on biological factors.
Kate Russell, Susan L. Hills, Alexandra M. Powers, John T.
Humans are born with 46 chromosomes in 23 pairs. Most women are 46XX and most men are 46XY. Research suggests, however, that in a few births per thousand some individuals will be born with a single sex chromosome 45X or 45Y sex monosomies and some with three or more sex chromosomes 47XXX, 47XYY or 47XXY, etc. In addition, some males are born 46XX due to the translocation of a tiny section of the sex determining region of the Y chromosome.