Mexico heat wave kills at least 15 people as temperatures exceed 45°C

Heat‑related deaths have risen sharply in Mexico during the current heat wave. The state of Tamaulipas reported three fatalities linked to heat stroke, bringing its total to 78 heat‑related cases (45 dehydration, 33 heat‑stroke). Baja California recorded 12 deaths – ten from heat stroke and two from dehydration – as temperatures reached 48 °C in Mexicali. National health officials say the season has generated over 1,100 heat‑related illnesses and between 43 and 52 confirmed deaths across the country.

Authorities urge residents to stay constantly hydrated, consume water with electrolytes, and avoid exposure to extreme heat. Municipalities in Baja California and Mexicali have opened rehydration points that distribute bottled water and oral‑rehydration salts.

Researchers at the National Autonomous University of Mexico (UNAM) explain that extreme heat raises body temperature and blood pressure, diverting brain resources away from serotonin production. The resulting drop in serotonin can increase irritability and aggression, adding a mental‑health dimension to the physical risks of the heat wave.