The study found that failing to adapt to heat would increase heat-related mortality in Spain by a factor of 10 over the next 80 years.
Notes on verification
Confirmed by peer-reviewed study (Díaz et al. 2019, Environmental Research) with matching figures (1,414 to 12,896 deaths/year), corroborated by independent Spanish news outlets and reiterated by lead author in a 2025 interview. [tier=gold indep_score=0.82 clusters=5 claim_tier=notable | framework convergence=single on Díaz et al. 2019 study using RCP8.5 climate scenario projections and population attributable risk (PAR) methodology for Spanish provinces (upstreams: Díaz, Sáez, Carmona, Mirón, Barceló, Luna, Linares (2019) - Environmental Research) — publishers independent, evidence may not be | kind=attributed eligibility=high]
Sources
- Un estudio cifra en cerca de 50.000 millones de euros anuales el coste que tendría para España la no adaptación al calor - ISCIII Portal Web (seed:health_and_medicine)
- https://www.sciencedirect.com/science/article/abs/pii/S0013935119301215 (corroboration)
- https://researchgate.net/publication/331374059_Mortality_attributable_to_high_temperatures_over_the_2021-2050_and_2051-2100_time_horizons_in_Spain_Adaptation_and_economic_estimate (corroboration)
- https://www.lamarea.com/2019/04/30/la-mortalidad-atribuible-al-calor-en-espana-puede-multiplicarse-por-diez-si-no-hay-adaptacion/ (corroboration)
- https://www.elagoradiario.com/desarrollo-sostenible/economia-circular/no-adaptarse-olas-calor-costara-50-000-millones-espana/ (corroboration)
- https://www.infobae.com/espana/2025/08/05/el-cambio-climatico-dispara-las-muertes-por-calor-en-europa-pero-solo-el-2-se-produce-por-causa-directa-hay-cuatro-olas-de-calor-mas-por-decada/ (corroboration)