After a mother killed her four young children and then herself last month in rural China, onlookers quickly pointed to life circumstances.
The family lived in extreme poverty, and bloggers speculated that her inability to escape adversity pushed her over the edge.
Can poverty really cause mental illness?
It's a complex question that is fairly new to science. Despite high rates of both poverty and mental disorders around the world, researchers only started probing the possible links about 25 years ago.