In China, according to a recent article by Teh-wei Hu and colleagues in Social Psychiatry and Psychiatric Epidemiology , depression costs 51 billion renminbi, or more than $6 billion, per year at 2002 prices. A few years ago, a research team led by Vikram Patel reported in the British Medical Journal that depression is common in Zimbabwe, where it was often known by a Shona word that means “thinking too much.”