The two major impacts include staying at home (which includes digital education, smart working, limited outdoor activity, and in-gym physical activity) and stockpiling food due to the restrictions on grocery shopping ( 6). Physical distancing and self-isolation strongly impact the lives of the citizens by affecting their eating habits and everyday behavior. Quarantine has been found to be a valuable tool in containing the spread of the virus however, it has inevitably led to a radical change in the lives of people. In these circumstances, governments of the countries most affected have implemented various levels of preventative measures and imposed restrictions on their citizens to contain the spread of COVID-19. Therefore, the only strategy against this virus is to apply measures that are capable of reducing its spread, such as isolation and quarantine, social distancing, community-wide containment ( 5), and strict enforcement of hygiene. At present there is no drug approved by the Food and Drug Administration (FDA) for which efficacy on the virus has been proved. Symptoms of COVID-19 vary for each individual, ranging from an asymptomatic infection to severe respiratory failure ( 2). The median incubation period for COVID-19 is 5.1 days and it is expected that almost every person who has been infected will show symptoms within 12 days of infection ( 4). Transmission of the virus occurs when the infected respiratory droplets are ingested or inhaled by individuals in close proximity contact transmission occurs when a person touches a surface or object contaminated with the virus and subsequently touches his/her mouth, nose, or eyes and aerosol transmission occurs when the respiratory droplets mix with the air, forming aerosols, which may cause infection in the lungs when inhaled in high doses in a relatively closed environment ( 3). Human-to-human aerosol transmission is undoubtedly the main source of contagion of the virus, which occurs mainly through infected respiratory droplets, our hands, or contaminated surfaces ( 2). COVID-19 was first reported in Wuhan city, China, where it was possible to trace the first reported case and the subsequent outbreak from a group of new cases of human pneumonia in late December 2019 ( 1). Novel human coronavirus disease (COVID-19), an infectious respiratory disease, has affected more than 50 million people around the world, thereby becoming the fifth documented pandemic since the Spanish flu in 1918. This was based on the observation that there has been an increase in food consumption and a reduction in physical activity with a consequent increase in weight. The results obtained indicate, in general, that the negative effect of quarantine was on eating habits and physical activity. The selection criteria involved answering a questionnaire that included information on the weight status and at least one of the other two aspects: changes in eating habits and/or physical activity during the quarantine period. Studies have been conducted in Italy and some European countries to highlight the role that quarantine has played in determining the lifestyle changes both in eating habits and physical activity and their possible correlation with increase in weight. Quarantine has proved to be effective in combating the spread of the virus however, it has inevitably led to a radical change in the lives of people. Therefore, the only strategy against this virus is to apply measures that are capable of reducing its spread, such as isolation and quarantine, social distancing, community-wide containment, and strict enforcement of hygiene. There is currently no drug approved by the Food and Drug Administration (FDA) for which efficacy on the virus has been proved. SARS-CoV-2 virus originated in China and evolved for 4 months within the country before becoming a global threat. Novel human coronavirus disease (COVID-19), an infectious respiratory disease, has affected more than 50 million people around the world up to November 2020, thereby becoming the fifth documented pandemic since the Spanish flu in 1918.
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