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Abstract
Objectives: Low and Middle-Income Countries are experiencing a fast-paced epidemiological
rise in clusters of non-communicable diseases such as diabetes and cardiovascular
disease, forming an imminent rise in multimorbidity. However, preventing multimorbidity
has received little attention in LMICs, especially in Sub-Saharan African Countries.
Methods: Narrative review which scoped the most recent evidence in LMICs about multimorbidity
determinants and appropriated them for potential multimorbidity prevention strategies.
Results: MMD in LMICs is affected by several determinants including increased age,
female sex, environment, lower socio-economic status, obesity, and lifestyle behaviours,
especially poor nutrition, and physical inactivity. Multimorbidity public health interventions
in LMICs, especially in Sub-Saharan Africa are currently impeded by local and regional
economic disparity, underdeveloped healthcare systems, and concurrent prevalence of
communicable and non-communicable diseases. However, lifestyle interventions that
are targeted towards preventing highly prevalent multimorbidity clusters, especially
hypertension, diabetes, and cardiovascular disease, can provide early prevention of
multimorbidity, especially within Sub-Saharan African countries with emerging economies
and socio-economic disparity. Conclusion: Future public health initiatives should
consider targeted lifestyle interventions and appropriate policies and guidelines
in preventing multimorbidity in LMICs.
Hypertension is the leading cause of cardiovascular disease and premature death worldwide. Owing to widespread use of antihypertensive medications, global mean blood pressure (BP) has remained constant or decreased slightly over the past four decades. By contrast, the prevalence of hypertension has increased, especially in low and middle-income countries (LMICs). Estimates suggest that in 2010, 31.1% of adults (1.39 billion) worldwide had hypertension. The prevalence of hypertension among adults was higher in LMICs (31.5%, 1.04 billion people) than in high-income countries (HICs; 28.5%, 349 million people). Variations in the levels of risk factors for hypertension, such as high sodium intake, low potassium intake, obesity, alcohol consumption, physical inactivity and unhealthy diet, may explain some of the regional heterogeneity in hypertension prevalence. Despite the increasing prevalence, the proportions of hypertension awareness, treatment and BP control are low, particularly in LMICs, and few comprehensive assessments of the economic impact of hypertension exist. Future studies are warranted to test implementation strategies for hypertension prevention and control, especially in low-income populations, and to accurately assess the prevalence and financial burden of hypertension worldwide.
One of our era's greatest scourges is air pollution, on account not only of its impact on climate change but also its impact on public and individual health due to increasing morbidity and mortality. There are many pollutants that are major factors in disease in humans. Among them, Particulate Matter (PM), particles of variable but very small diameter, penetrate the respiratory system via inhalation, causing respiratory and cardiovascular diseases, reproductive and central nervous system dysfunctions, and cancer. Despite the fact that ozone in the stratosphere plays a protective role against ultraviolet irradiation, it is harmful when in high concentration at ground level, also affecting the respiratory and cardiovascular system. Furthermore, nitrogen oxide, sulfur dioxide, Volatile Organic Compounds (VOCs), dioxins, and polycyclic aromatic hydrocarbons (PAHs) are all considered air pollutants that are harmful to humans. Carbon monoxide can even provoke direct poisoning when breathed in at high levels. Heavy metals such as lead, when absorbed into the human body, can lead to direct poisoning or chronic intoxication, depending on exposure. Diseases occurring from the aforementioned substances include principally respiratory problems such as Chronic Obstructive Pulmonary Disease (COPD), asthma, bronchiolitis, and also lung cancer, cardiovascular events, central nervous system dysfunctions, and cutaneous diseases. Last but not least, climate change resulting from environmental pollution affects the geographical distribution of many infectious diseases, as do natural disasters. The only way to tackle this problem is through public awareness coupled with a multidisciplinary approach by scientific experts; national and international organizations must address the emergence of this threat and propose sustainable solutions.
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