A study appearing in the Archives of General Psychiatry (2009; 66(10): 1090-8) found that diet can affect the incidence of depression. The study followed the dietary habits of 10,094 subjects for 4.4 years. During the course of the study, 480 were diagnosed with depression. The Mediterranean diet consists of high consumption of fruits, vegetables and nuts. There is a high amount of monounsaturated oil (olive oil), and low saturated fat consumption. The diet is low in high-fat meat and dairy, and high in fish and legumes. According to the study, the subjects adhering to this type of diet had a lower incidence of depression.