Introduction

Marijuana is the world’s most widely used illegal drug. In Mexico, it is the drug of choice for both male and female users of all ages, and there has been a recent increase in its use.

Objective

To describe drug use trends in people seeking treatment by sex and age range, and to explore different patterns.

Method

To provide a description of trends and rates of increase for the population attended between 2005 and 2016 and to make a comparative analysis of patterns of use in a sample of 11 595 marijuana users who received treatment in 2016.

Results

In general, there has been a greater increase in use in the group ages twelve to seventeen. The greatest increase in lifetime use was reported among women in this age range. The greatest increase in marijuana use in the past month was found among women aged eighteen to thirty-five. Women use a greater variety of substances, and a higher number of younger women report using cocaine, methamphetamines, benzodiazepines and hallucinogens than men.

Discussion and conclusion

Significant increases in marijuana use have been registered among girls under 18 and women in recent years. The differences in trends and patterns of use for men and women are being reduced and reconfigured.