Abstract
OBJECTIVE To identify and describe the mechanisms of lifestyle characteristics-obesity, DM, hypertension and physical inactivity-that may lead to the severity of illness among individuals with COVID-19. DATA SOURCE A scoping review was conducted by searching electronic databases of PubMed and Scopus from December 2019 to August 2020. INCLUSION/EXCLUSION CRITERIA inclusion criteria were studies that explicitly describe the mechanism of COVID-19 in relationship with either hypertension, type 2 diabetes mellitus type 2 (DM), obesity and/or physical inactivity. Studies of epidemiological background, descriptive surveys and interventional studies were excluded. DATA EXTRACTION study characteristics were tabulated according to purpose, type of non-communicable diseases (NCDs), the hypothesis on the mechanism of infestation (MOI) and conclusion. DATA SYNTHESIS NCDs were categorized according to type and hypothesis on mechanisms of infestation. The interplay between COVID-19, type of NCDs and MOI leading to the severity of the disease was appraised. RESULTS Twenty-four (24) studies were identified from 357 unique records. Eight studies postulated the mechanism of infestation and interaction between COVID 19 illness severity and Obesity, while 7 studies described COVID-19 and DM. Five studies highlighted the interaction between COVID-19 and hypertension with 4 studies showing how physical activity restriction suppresses immunity. CONCLUSION The current review, identified and explicitly described the mechanisms of the lifestyle characteristics that may increase the severity of illness among people with COVID-19.
