Sex is Scientific and Consequential

Click here to see and sign the Petition to Uphold the Scientific Definition of Sex in Federal Law and Policy

Click at the following link to read a letter prepared by medical, legal, policy organizations and academics: Scientific Definition of Sex in Law Protects Health and Rights of All.

The Association of American Physicians and Surgeons, Inc., agrees with the Trump administration, ” to adhere to the
scientific definition of sex with respect to federal law.” See the full letter from the AAPS to the US Department of Health and Human Services.




What society accepts as the norm may not be what is actually taking place within the body

Biological sex shapes tumour evolution across cancer types

A person’s sex can affect the kinds of cancer-causing mutations they develop, according to a genomic analysis spanning nearly 2,000 tumours and 28 types of cancer.

Institute of Medicine (2001) Exploring the Biological Contributions to Human Health Does Sex Matter?

by Institute of Medicine (Author), Board on Health Sciences Policy (Author), Committee on Understanding the Biology of Sex and Gender Differences