Abstract
BACKGROUND: The primary objective worldwide during the coronavirus disease 2019 (COVID-19) pandemic had been controlling disease transmission. However, lockdown measures used to mitigate transmission affected human behavior and altered lifestyles, with a likely impact on chronic non-communicable diseases. More than a year into the pandemic, substantial peer-reviewed literature emerged on altered lifestyles following the varying lockdown measures imposed globally to control the virus spread. We explored the impact of lockdown measures on six lifestyle factors, namely diet, physical activity, sleep, stress, social connectedness, and the use of tobacco, alcohol, or other harmful substances. METHODS: We comprehensively searched PubMed and the World Health Organization's global literature database on COVID-19 and retrieved 649 relevant articles for the narrative review. A critical interpretative synthesis of the articles was performed. RESULTS: Most of the articles included in the review identified the negative effect of lockdown measures on each of the lifestyle factors in many parts of the world. Encouraging lifestyle trends were also highlighted in a few articles. Such trends can positively influence the outcome of lifestyle-related chronic diseases, such as obesity and diabetes. CONCLUSIONS: The lockdown associated with COVID-19 has largely had a negative impact on the lifestyles of individuals and communities across many countries and cultures. However, some individuals and communities also initiated positive lifestyle-related behavioral changes. If the knowledge generated by studying the impact of COVID-19-related lockdowns on the six lifestyle factors is further consolidated, it could improve chronic disease outcomes. This will help better understand lifestyle behaviors amidst crises and assist in redesigning extreme public health measures such as lockdowns.. It is up to governments, communities, and healthcare/academic entities to derive benefit from lessons learned from the pandemic, with the ultimate objective of better educating and promoting healthy lifestyles among communities.