As of puberty, the process of physical changes begins that turns the girl into an adult capable of sexual reproduction. This does not mean, however, that the girl is ready to be a mother. Theteen pregnancy it has become a public health problem in Mexico.
Figures from the National Population Council (CONAPO) reveal that around 40% of unwanted and unplanned pregnancies occur in young people between 15 and 19 years of age, the same period in which there is a greater number of maternal and infant deaths.
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According to the National Health Survey (ENSANUT 2012), more than 60% of young people who had their first sexual relationship before age 19 did not use any type of contraceptive method.