INSERM (French National Institute of Health and Medical Research) | News | 24 August 2022

This new study based on all of the deaths having occurred in France over a 49-year period and  published in the American Journal of Epidemiology, , confirms the U-shaped relationship (short-term increase in mortality when temperatures are at their hottest or coldest) observed between temperature and the majority of the causes of death considered. However, an exception has been observed for death from suicide, which rose steadily in line with the temperature, without the increased risk at cold temperatures observed for the other causes of death. 
https://presse.inserm.fr/en/high-temperatures-have-short-term-impact-on-all-major-causes-of-death-including-suicide/45718/