People whose gender identity or expression does not conform to the sex they were assigned at birth are transgender. While individuals may be assigned to a sex at birth based on how they present biologically, their sense of their gender may differ. A trans man is a man who was identified as female at birth, and a trans woman is a woman who was identified as male. ( Transsexual is an older term that
Why Does Transgender Develop?
Understanding what causes transgender is essential for prevention and treatment. Research consistently shows that transgender arises from a complex interplay of biological, psychological, and social factors — rarely from a single cause.
What Researchers Have Found
Research into transgender has identified multiple contributing pathways. Studies using neuroimaging, genetics, and longitudinal data reveal that no single factor fully explains why transgender develops.
Biological Factors
Biological contributors to transgender include:
- Genetics: Family history increases risk; certain genes influence vulnerability
- Brain chemistry: Neurotransmitter imbalances (serotonin, dopamine, norepinephrine) play key roles
- Brain structure: Differences in the prefrontal cortex, amygdala, and hippocampus are documented
- Physical health: Chronic illness, hormonal changes, and sleep disruption can trigger or worsen transgender
Psychological Factors
- Early experiences: Childhood adversity, attachment disruption, and trauma shape psychological vulnerability
- Cognitive patterns: Negative thinking styles, perfectionism, and rumination increase risk
- Coping skills: Limited emotional regulation skills make transgender more likely under stress
- Personality: Certain traits (neuroticism, harm avoidance) are associated with higher risk
Social and Environmental Factors
Environmental factors — including chronic stress, relationship problems, financial difficulty, and major life events — can trigger transgender in vulnerable individuals.
What Triggers an Episode?
Even in people with predisposing factors, transgender often requires a triggering event:
- Major life transitions (job loss, relationship breakdown, bereavement)
- Prolonged stress without adequate recovery
- Substance use or withdrawal
- Physical illness or injury
- Social isolation or conflict
Protective Factors
Not everyone with risk factors develops transgender. Protective factors include: strong social support, effective coping skills, physical health maintenance, access to care, and psychological resilience built through prior challenges.