What is afab

Last updated: April 1, 2026

Quick Answer: AFAB is an acronym for 'assigned female at birth,' referring to the biological sex designation given to a person at birth based on external genital anatomy.

Key Facts

Definition and Usage

AFAB stands for 'assigned female at birth,' a term used to describe individuals who were assigned female sex at birth based on their biological characteristics, typically external genital anatomy. The acronym distinguishes between biological sex assignment at birth and a person's gender identity. An AFAB person may identify as female, male, non-binary, or another gender identity.

Context in Medical and Social Settings

Healthcare providers use AFAB and its counterpart AMAB (assigned male at birth) to establish medical history, as certain health conditions and screenings differ by biological sex. For example, AFAB individuals may need cervical cancer screening or gynecological care. In social and community contexts, AFAB is used by LGBTQ+ individuals and allies to respectfully discuss sex assigned at birth separately from gender identity.

Relationship to Gender Identity

A person's sex assignment at birth does not determine their gender identity. Many AFAB individuals identify as women, but some identify as men (transgender men), non-binary, genderqueer, or other identities. Gender identity develops through complex interactions of biology, psychology, and social factors. The term AFAB allows for clearer communication about these distinctions in medical, legal, and social discussions.

Usage in LGBTQ+ Communities

AFAB terminology is common in LGBTQ+ spaces, support groups, and online communities where nuanced discussion of sex and gender is important. Transgender men who were AFAB may discuss shared experiences. Non-binary and genderqueer AFAB individuals may use the term to describe their medical needs while asserting their actual gender identity. The term provides precision in discussions where both sex and gender are relevant.

Related Terminology

Importance and Respect

Using AFAB respectfully acknowledges the distinction between biological sex assignment and gender identity. It's particularly important in medical contexts for accurate health assessment, and in social contexts for respectful discussion and inclusion. However, the term should only be used when medically or contextually relevant, and always with respect for a person's stated gender identity.

Related Questions

What is the difference between AFAB and AMAB?

AFAB (assigned female at birth) and AMAB (assigned male at birth) are parallel terms describing the biological sex assignment given at birth. Both are separate from a person's current gender identity, and both are used in medical and social contexts to discuss sex assignment separately from gender.

Can an AFAB person be a transgender man?

Yes, a transgender man is someone assigned female at birth whose gender identity is male. AFAB transgender men may use medical services designed for AFAB individuals while asserting their male identity. Gender identity is distinct from and not determined by sex assignment at birth.

Why is AFAB terminology important in healthcare?

AFAB terminology allows healthcare providers to understand a patient's medical history based on biological sex while respecting gender identity. This distinction is important for appropriate screening, diagnosis, and treatment, as certain health conditions vary by biological sex.

Sources

  1. Wikipedia - Sex Assignment CC-BY-SA-4.0
  2. The Trevor Project - LGBTQ+ Support Copyright