Mexico is a culturally, socially and economically heterogeneous country, with a population of over 100 million. Although it is regarded as a country with a medium–high income according to World Bank criteria, inequality continues to be one of its main problems. In addition to this, the country is going through a difficult period. Large parts of the population face economic insecurity, as a result of which feelings of despair, fear and impotence are common. It is hardly surprising, then, that mental disorders should constitute a major public health problem: depression is the main cause of loss of healthy years of life (6.4% of the population suffer from it), while alcohol misuse is the 9th (2.5%) and schizophrenia the 10th (2.1%) most common health problem (González-Pier et al, 2006).