https://www.sciencedirect.com/science/article/abs/pii/S0165178123006418
https://www.madinamerica.com/2024/01/psychiatric-yeti-schizophrenia-genetic/
Sullivan and colleagues’ 81% schizophrenia heritability estimate should be disregarded in the context of a proposed re-evaluation of behavioral twin studies and their underlying assumptions. More than six decades of failed DNA-based attempts to identify genes that cause schizophrenia support this conclusion.
https://journals.sagepub.com/doi/abs/10.1177/10892680261428409
Of course Big Pharma wants people to believe their propaganda despite the science stating otherwise. In fact what "schizophrenia" is largely can be debated as well.
More importantly, heritability estimates should be discarded. Their only practical purpose is to predict the results of a selective breeding program under controlled conditions. For any other purpose, heritability estimates are misleading and meaningless. A condition may ot may not be influenced by genetic factors, but “heritability” does not exist.