Taking multivitamins, probiotics, Omega-3s or supplements such as vitamin D may help reduce the risk of SARS-CoV-2 infection.
In contrast, supplements such as vitamin C, zinc or garlic did not contribute to a lower risk of COVID-19, the British Medical Journal Nutition Prevention & Health (BMJ) reported on Monday, according to Agerpres.
Since the outbreak of the pandemic in 2020, according to experts at Imperial College London, the emphasis has been on the benefits of vitamin supplements to avoid and treat COVID-19.
In the United Kingdom, following the lockdown decreed on March 23 last year, there was a significant increase in sales of vitamin C and multivitamins.
Dietary supplements may help maintain a healthy immune system, but it is not known whether specific supplements may be associated with a lower risk of infection with the new coronavirus.
To establish a connection, researchers at Imperial College London used COVID-19 Symptom Study users to find out if those taking supplements were less likely to contract the infectious disease.
The application was launched in the United Kingdom, the USA and Sweden in March 2020 to obtain data on the evolution of the pandemic.
Initially, the place, age and risk factors on the health of the users were recorded, but subsequently they were asked daily updated information about the symptoms, the results of the PCR tests or the medical assistance.
For this study, the researchers analyzed information provided by 372,720 users of the UK application on regular use of dietary supplements in May, June and July 2020 (the first wave of the pandemic) and positive results on PCR tests for coronavirus.
Between May and July, 175,652 users in the UK regularly took dietary supplements, while 197,068 did not. About two-thirds (67%) of them were women. In total, 23,521 people tested positive for SARS-CoV-2, while tests for 349,199 were negative.
Therefore, consumption of probiotics, Omega-3, multivitamins or vitamin D has been associated with a lower risk of SARS-CoV-2 infection.
Analyzing data such as age, sex and weight, the researchers found that the protection offered by probiotics, Omega-3, multivitamins and vitamin D was observed especially in women, regardless of age or weight, but not as clearly in the case of men.