The new policy is one of Robert F. Kennedy Jr.s first moves as health secretary.

The prior administrations policy of trying to engineer gender ideology into every aspect of public life is over.

The new HHS guidance defines sex as a persons immutable biological classification as either male or female.

HHS headquarters

J. David Ake / Getty Images

It also adds the terms mother and father to describe female and male parents, respectively.

That order sparked an outcry from scientists who pointed out scientific falsities in that definition.

Biological factors, like chromosomes and genitalia, help healthcare providers determine a babys sex at birth.

The syndrome affects one in every 500 to 1,000 newborns.

Intersexuality includes natural variations in external anatomy, internal sex organs, hormones, or chromosomes.

For instance, someone may be born with a vagina but internal male sex organs.

Or somecells could present XX chromosomes while others express as XY.

By some estimates, about 2% to 4% of people are intersex.

Sex vs.

Sex is assigned at birth and associated with physical attributes, such as anatomy and chromosomes.

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Jones T.Intersex studies: a systematic review of international health literature.Sage Open.

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