en Bariatric Surgery Bariatric Surgery Review/Systematic Review Review/Systematic Review <span style="font-size:11pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Introduction</span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">: Mandatory lockdown of COVID-19 has caused a great impact in patients lives. Meanwhile, people underwent bariatric surgery are very susceptible to adverse effects of this social isolation. This study investigates the effects of COVID-19 lockdown on patients undergone previous bariatric surgery</span></span></span><span dir="RTL" lang="FA" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">.</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Methods</span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">: Data source included PubMed and ScienceDirect. Articles were screened and eligible data was extracted. The outcomes of this study were the effects of lockdown on previous bariatric surgery that could lead to patient&rsquo;s weight regain</span></span></span><span dir="RTL" lang="FA" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">.</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Results</span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">: Our review study included 8 articles on 691 patients. COVID-19 lockdown had a profound effect on the lifestyle of people with a history of bariatric surgery. Many factors in the studies, including psychological factors such as depression, decreased social support, anxiety, eating habits such as reduced healthy food intake and lack of control over eating, and ultimately physical activity were negatively affected by the mandatory lockdown</span></span></span><span dir="RTL" lang="FA" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">.</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Conclusion</span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">: The results of this review study demonstrated that social isolation during COVID-19 pandemic has caused many complications for patients underwent bariatric surgery, which can eventually lead to weight regain and recurrence of comorbidities in these population</span></span></span><span dir="RTL" lang="FA" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">.</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span></span></span> Bariatric Surgery, Weight Regain, Covid-19 87 92 http://annbsurg.iums.ac.ir/browse.php?a_code=A-10-46-1&slc_lang=en&sid=1 Reyhane Molahosseini contact.mollahosseini@gmail.com 10031947532846002139 10031947532846002139 Yes Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran Taiebeh Mohammadi Farsani tmfarsani@gmail.com 10031947532846002140 10031947532846002140 No Department of Medical Biotechnology, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran Gholamreza Mohammadi Farsani contact.mollahosseini@gmail.com 10031947532846002141 10031947532846002141 No Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran. Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran