Rezende Luiz Felipe C, De Paula Eurico R, Muella Marcio T A H, Dutra Severino L G, Rosa Reinaldo R, Saldiva Paulo H N, Ometto Jean P H B
National Institute for Space Research (INPE), Sao Jose dos Campos, Brazil.
Universidade do Vale do Paraíba (UNIVAP), Sao Jose dos Campos, Brazil.
Commun Med (Lond). 2025 Jul 1;5(1):247. doi: 10.1038/s43856-025-00887-7.
Understanding the role of space weather, specifically Geomagnetic Disturbances (GMDs) caused by solar activity, on health outcomes is unclear. One emerging link includes the impact of space weather on myocardial infarctions (MI). In this study we examined the correlation between MI and GMDs in Brazil.
We used a database from the public health in Brazil, focusing on the city of São José dos Campos (23° 10' 44″ S, 45° 53' 13″ W), located in the state of São Paulo, during the period of 1998-2005. We focused on admissions for MIs, which included a total of 871 men and 469 women. We categorized the MI data into three age groups: age 30 and younger, age 31-60, and age over 60. Additionally, we incorporated Planetary Index (Kp) data as an indicator of variations in the Earth's geomagnetic field resulting from solar disturbances, categorized as quiet, moderate, or disturbed days. In our analysis, we employed two methods: statistical counting and the unsupervised clustering known as K-Means, considering the attributes of age, sex, and geomagnetic condition.
Here we show that geomagnetic conditions have an impact on MI cases, particularly for women. The rate of relative frequency of MI cases during disturbed geomagnetic conditions is almost three times greater compared to quiet geomagnetic conditions. Using the unsupervised K-Means algorithm, the results indicate that the group associated with disturbed geomagnetic conditions has a higher incidence of MIs in women.
Overall, our results provide evidence that women may exhibit a higher susceptibility to the effects of geomagnetic disturbances caused by solar activity on MI.
空间天气，特别是由太阳活动引起的地磁扰动对健康结果的作用尚不清楚。一个新出现的关联包括空间天气对心肌梗死（MI）的影响。在本研究中，我们调查了巴西心肌梗死与地磁扰动之间的相关性。
我们使用了巴西公共卫生数据库，重点关注位于圣保罗州的圣若泽杜斯坎普斯市（南纬23°10′44″，西经45°53′13″），时间跨度为1998年至2005年。我们关注心肌梗死的入院病例，其中共有871名男性和469名女性。我们将心肌梗死数据分为三个年龄组：30岁及以下、31 - 60岁和60岁以上。此外，我们纳入了行星指数（Kp）数据作为太阳扰动引起的地球地磁场变化的指标，分为平静、中等或扰动日。在我们的分析中，我们采用了两种方法：统计计数和称为K均值的无监督聚类，考虑年龄、性别和地磁条件等属性。
我们在此表明，地磁条件对心肌梗死病例有影响，尤其是对女性。与平静地磁条件相比，在地磁扰动期间心肌梗死病例的相对频率几乎高出三倍。使用无监督K均值算法，结果表明与地磁扰动条件相关的组中女性心肌梗死的发病率较高。
总体而言，我们的结果提供了证据，表明女性可能对太阳活动引起的地磁扰动对心肌梗死的影响表现出更高的易感性。
