Mental illness arises from a complex interplay of genetic, environmental, and social factors, not solely from one parent. Both mothers and fathers can contribute genetic predispositions, but neither is exclusively responsible. Here’s a concise explanation for your FAQ answer in approximately 300 words:

Mental illnesses, such as depression, anxiety, schizophrenia, or bipolar disorder, are influenced by a combination of genetics and environment. Genes from both parents play a role. Research indicates that many mental health conditions have a hereditary component, with specific genes increasing susceptibility. For example, studies suggest that schizophrenia has a heritability rate of about 80%, meaning genetics significantly contributes, but it’s not the sole factor. These genes can come from either the mother or father, as both provide half of a child’s DNA. However, no single “mental illness gene” exists; instead, multiple genes interact, and their expression depends on environmental triggers.

Environmental factors, such as stress, trauma, or upbringing, often interact with genetic predispositions. For instance, a child may inherit a genetic risk for depression from their father, but whether it manifests can depend on life experiences, like childhood adversity or socioeconomic conditions. Similarly, a mother’s mental health during pregnancy or parenting style can influence a child’s mental well-being, but this is not a direct genetic transmission. Epigenetics, where environmental factors alter gene expression, further complicates the picture, showing that nurture and nature are intertwined.

Blaming one parent oversimplifies the issue and ignores the broader context. Family history from both sides matters, but so do lifestyle, social support, and access to mental health resources. If concerned about inherited risks, consulting a genetic counselor or mental health professional can provide clarity. Ultimately, mental illness is a shared human vulnerability, shaped by a web of factors beyond just maternal or paternal influence.