According to mortality statistics, in Mexico, during the period 2002-2010, 393 people died by excessive natural heat, mostly in the northwest of the country. Information about these cases is valuable for understanding the social determinants of health associated with this cause of death, so in this paper we analyze the characteristics of dead people that reveal their social situation. The statistics, for example, show that most of the victims were men, most of whom had a low socioeconomic status. This paper explores and opens several lines of research on the impact of high temperatures on the population. [ABSTRACT FROM AUTHOR]