Department of Anatomy, Faculty of Medicine and Surgery, University of Malta, Malta.
Department of Health Information and Research, Ministry of Health, Malta.
Early Hum Dev. 2021 Apr;155:105222. doi: 10.1016/j.earlhumdev.2020.105222. Epub 2020 Oct 6.
There is a significant relationship between ambient temperature and mortality. In healthy individuals with no underlying co-morbid conditions, there is an efficient heat regulation system which enables the body to effectively handle thermal stress. However, in vulnerable groups, especially in elderly over the age of 65 years, infants and individuals with co-morbid cardiovascular and/or respiratory conditions, there is a deficiency in thermoregulation. When temperatures exceed a certain limit, being cold winter spells or heat waves, there is an increase in the number of deaths. In particular, it has been shown that at temperatures above 27 °C, the daily mortality rate increases more rapidly per degree rise compared to when it drops below 27 °C. This is especially of relevance with the current emergency of global warming. Besides the direct effect of temperature rises on human health, global warming will have a negative impact on primary producers and livestock, leading to malnutrition, which will in turn lead to a myriad of health related issues. This is further exacerbated by environmental pollution. Public health measures that countries should follow should include not only health-related information strategies aiming to reduce the exposure to heat for vulnerable individuals and the community, but improved urban planning and reduction in energy consumption, among many others. This will reduce the carbon footprint and help avert global warming, thus reducing mortality.
环境温度与死亡率之间存在显著关系。在没有潜在合并症的健康个体中,存在有效的体温调节系统,使身体能够有效应对热应激。然而,在脆弱人群中,特别是 65 岁以上的老年人、婴儿和患有合并心血管和/或呼吸道疾病的个体中,体温调节存在缺陷。当温度超过一定限度时,无论是寒冷的冬季还是热浪,死亡人数都会增加。特别是已经表明,当温度高于 27°C 时,与温度低于 27°C 时相比,每升高一度,每日死亡率上升得更快。这在当前全球变暖的紧急情况下尤为重要。除了温度升高对人类健康的直接影响外,全球变暖还将对初级生产者和牲畜产生负面影响,导致营养不良,进而导致无数与健康相关的问题。这进一步因环境污染而恶化。各国应采取的公共卫生措施不仅应包括旨在减少脆弱人群和社区暴露于高温的与健康相关的信息策略,还应包括改善城市规划和减少能源消耗等措施。这将减少碳足迹,有助于避免全球变暖,从而降低死亡率。