'No evidence' that vitamin D can prevent or treat COVID-19
A review of existing studies finds no indication that taking vitamin D supplements protects against infection with the new coronavirus.
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含易誤解內容！英國針對5項研究的回顧審查已表示：「沒有證據表明缺乏維生素D，是COVID-19的獨立危險因素」，強調「研究中發現有關聯性，並不代表具備因果關係」。
1. 老年人、肥胖者均較容易存在維生素D缺乏症，而這些人群本身即為較高風險者，相關研究也忽略種族及社會經濟地位所導致的醫療弱勢狀況，若針對此類潛在混雜因素調整研究分析，則可發現COVID-19與維生素D水平之間缺乏獨立關聯。
2. 雖然確實有研究認為，維生素D水平較高的國家，covid-19的病例數和人均死亡率較低，但此類調查攸關各國家實施的檢測次數與防疫政策，並無法證明死亡率與維生素D具備因果關係。
3. 雖然維生素D確實對健康至關重要，但目前醫學界共識性文件並不鼓勵廣泛食用維生素D營養品，也沒有科學證據證明攝入維生素D能預防或治療COVID-19。
1. 老年人、肥胖者均較容易存在維生素D缺乏症，而這些人群本身即為較高風險者，相關研究也忽略種族及社會經濟地位所導致的醫療弱勢狀況，若針對此類潛在混雜因素調整研究分析，則可發現COVID-19與維生素D水平之間缺乏獨立關聯。
2. 雖然確實有研究認為，維生素D水平較高的國家，covid-19的病例數和人均死亡率較低，但此類調查攸關各國家實施的檢測次數與防疫政策，並無法證明死亡率與維生素D具備因果關係。
3. 雖然維生素D確實對健康至關重要，但目前醫學界共識性文件並不鼓勵廣泛食用維生素D營養品，也沒有科學證據證明攝入維生素D能預防或治療COVID-19。
Opinion Sources
‘No evidence’ that vitamin D can prevent or treat COVID-19https://www.medicalnewstoday.com/articles/no-evidence-that-vitamin-d-can-prevent-or-treat-covid-19
Researchers caution against ‘misinformation’ on vitamin D during COVID-19 pandemic
https://www.healio.com/news/endocrinology/20200602/researchers-caution-against-misinformation-on-vitamin-d-during-covid19-pandemic
Vitamin D Deficiency and COVID-19: Is There a Connection?
https://www.yalemedicine.org/news/vitamin-d-covid-19
https://www.medicalnewstoday.com/articles/no-evidence-that-vitamin-d-can-prevent-or-treat-covid-19
Researchers caution against ‘misinformation’ on vitamin D during COVID-19 pandemic
There is no evidence to suggest very high doses of vitamin D can prevent or treat COVID-19, and individuals with limited access to sunlight should consider a supplement while adhering to a healthy lif
Vitamin D Deficiency and COVID-19: Is There a Connection?
Yale Medicine doctors discuss studies that explore a possible relationship between vitamin D and COVID-19.
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