PHYSICAL ACTIVITY AS A PREVENTIVE STRATEGY AGAINST NON-COMMUNICABLE DISEASES: A COMPREHENSIVE REVIEW

Abstract

Non-communicable diseases (NCDs), including cardiovascular diseases, type 2 diabetes mellitus, cancer, and chronic respiratory diseases, are the leading causes of morbidity and mortality worldwide. The increasing prevalence of these conditions has been strongly linked to modifiable lifestyle factors, particularly physical inactivity. Physical activity is recognized as an effective and economical strategy for the prevention and management of NCDs. This review examines the role of physical activity in reducing the risk of major non-communicable diseases and explores the physiological mechanisms underlying its protective effects. A narrative review of relevant literature was conducted using peer-reviewed articles, systematic reviews, meta-analyses, and reports from international health organizations. Evidence consistently indicates that regular participation in moderate-to-vigorous physical activity significantly lowers the risk of developing cardiovascular disease, obesity, type 2 diabetes, certain cancers, and chronic respiratory disorders. Physical activity contributes to improved cardiovascular fitness, enhanced insulin sensitivity, better weight management, reduced systemic inflammation, and strengthened immune function. Furthermore, individuals who meet recommended physical activity guidelines experience lower rates of disease-related morbidity and premature mortality compared to sedentary populations. In conclusion, physical activity serves as a powerful preventive tool against NCDs and should be promoted through comprehensive public health policies and community-based interventions to reduce the global burden of chronic diseases and improve overall population health.