GENETIC THEORIES OF SCHIZOPHRENIA

Schizophrenia has a strong genetic component, supported by evidence from family, twin, and adoption studies. First-degree relatives face a 9–13% risk, and identical twins show a 48% concordance rate, highlighting heritability. Adoption studies further separate genetic and environmental influences, showing higher rates among biological relatives. Modern research reveals schizophrenia is polygenic, involving multiple genetic variations. Explore how genes and environment interact in this complex disorder.