Apollonia was diagnosed with major depressive disorder five years ago. she knows her mother took medicine to combat depression and she worries her daughter will experience depression too. why

Apollonia worries her daughter will experience depression too because many studies have shown that mood disorders, such as depression and anxiety can come from a genetic inheritance, and that a special event or circumstance could develop the disorder, so If her mother had it, and she was diagnosed, chances are that her daughter will develop it in the future.