en public specific letter to the editor <div style="text-align: justify;">^&nbsp;</div> <div style="text-align: justify;"><div style="clear:both;"></div>^{Corona disease has killed at least 5 million people globally since it started in Wuhan, China in December 2019 (World Health Organization, 2021). The disease is caused by SARS-COVID-19, and is transmitted from person to person by respiratory droplets (Baladia<em> et al.</em>, 2020, Ejaz<em> et al.</em>, 2020). Although the early symptoms of COVID-19 &nbsp;include fever, weariness, headache, sore throat, cough, dizziness, vomiting, diarrhea, and lung involvement (Shakoor<em> et al.</em>, 2021), it can cause long-term risks, such as chronic lung disorders, Alzheimer&#39;s, Parkinson&#39;s, and multiple sclerosis (Wang<em> et al.</em>, 2020)}</div> vitamin C , covid-19 7 10 http://jnfs.ssu.ac.ir/browse.php?a_code=A-10-523-1&slc_lang=en&sid=1 Mahdieh Baghaenia 0000-0003-1921-0270 No Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Reyhaneh Dehghani 0000-0001-5762-738X No Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Fatemeh Amir Soltani 0000-0001-9232-4528 No Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Sayyed Saeid Khayyatzadeh 0000-0002-9133-7340 No Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Hassan Mozaffari-Khosravi mozaffari.kh@gmail.com 0000-0002-3513-1778 Yes Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.