review · Medicine
Sickle cell anaemia is a hereditary blood disorder where abnormal haemoglobin causes red blood cells to deform, resulting in severe health complications. Climatic variations significantly influence the prevalence, management, and health outcomes associated with this condition. Environmental shifts, including fluctuating temperatures, extreme weather, and humidity changes, directly affect patients. High ambient temperatures worsen symptoms and can trigger painful vaso-occlusive crises through dehydration and increased blood viscosity, while low temperatures induce vaso-occlusion through blood vessel constriction. Additionally, altered rainfall patterns restrict access to clean drinking water, threatening essential hydration routines. Severe weather events can also fracture healthcare infrastructure, disrupting access to vital medications and routine care, particularly in vulnerable communities. Mitigating these risks requires interdisciplinary strategies, such as building climate-resilient healthcare systems, adopting environmental adaptation measures, and expanding public education programmes to support patient management under variable climatic conditions.
Climate change poses direct physiological and logistical threats to people living with sickle cell anaemia. Temperature extremes directly trigger severe health crises, whilst droughts and damaged healthcare infrastructure limit access to the water and medicines needed to manage the condition. Understanding these links helps healthcare systems prepare for environmental disruptions and better protect vulnerable patient populations.
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Sickle cell anemia (SCA) is a hereditary blood disorder characterized by abnormal hemoglobin, causing red blood cells to assume a sickle shape, leading to various complications. Climate change has emerged as a significant global challenge, influencing environmental conditions worldwide. This paper explores the implications of climatic variations on the prevalence, management, and outcomes of SCA. Climate change affects weather patterns, leading to altered temperatures, increased frequency of extreme weather events, and variations in humidity levels. These changes can have a profound impact on individuals living with SCA. High temperatures exacerbate the symptoms of SCA, potentially triggering painful vaso-occlusive crises due to dehydration and increased blood viscosity. Conversely, cold temperatures may induce vaso-occlusion by causing blood vessels to constrict. Changes in rainfall patterns might also affect water accessibility, which is crucial for maintaining adequate hydration, particularly in regions prone to droughts. The management of SCA is multifaceted, involving regular medical care, hydration, and avoiding triggers that could precipitate a crisis. Adverse weather events and natural disasters can disrupt healthcare infrastructure and access to essential medications and resources for SCA patients, especially in vulnerable communities. To mitigate the implications of climatic change on SCA, interdisciplinary strategies are essential. These strategies may include enhancing healthcare systems' resilience to climate-related disruptions, implementing adaptive measures to address changing environmental conditions, and promoting public awareness and education on managing SCA amidst climate variability. In conclusion, climatic variations pose significant challenges for individuals with SCA, affecting the prevalence, management, and outcomes of the disease.
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DOI: 10.1097/md.0000000000037127
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