Drinking coffee could offer new dietary defence against Covid – amount to drink

COVID patients exhale high levels of virus the first eight days

Drinking green tea was recently found to “effectively inactivate” Covid. 

Now, a new study published in BMC’s Cell & Bioscience journal, has suggested coffee can limit a Covid infection.

Since late 2020, many Covid variants have spread globally. Recent reports have revealed the Omicron variant has at least 32 mutations in its spike protein – double that of the Delta variant.

While Covid booster vaccines have evolved to help fight the virus, many experts have stressed the importance of diet in combating Covid infections.

Research has found regular physical activity and a diet rich in polyphenols can boost the immune system to reduce the risk of severe Covid.

READ MORE Eight symptoms of ‘highly transmissible’ new Covid strain to spot

Coffee, also rich in polyphenolic compounds like chlorogenic acid (CGA), caffeic acid (CAA), cafestol, melanoidins and trigonelline, has been recognised as a dominant source of CGA in a number of studies.

Past studies suggest CGA in coffee can positively impact blood pressure, lipid profile, glycemia and insulin resistance, contributing to the improvement of metabolic syndrome and enhancing metabolism, inflammation, cardiovascular health and liver function.

In a new study, researchers examined the effectiveness of coffee against Covid.

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They observed data from the UK Biobank to find coffee can be a new strategy to reduce Covid infection by blocking spike protein ACE2 interaction, slowing down TMPRSS2 and CTSL activity and ridding the protein level of TMPRSS2 and ACE2.

Using the HRMS-exploring-recombination-examining method, researchers discovered that isochlorogenic acid A, B, and C in coffee restrict Covid infection (43–54 percent efficiency), as well as decaffeinated coffee.

In the trial, involving 64 people, consuming one to two cups of coffee per day proved effective in stopping entry for multiple Covid variants.

The authors of the study also found consuming coffee within six hours is crucial, with a recommendation to have another cup after this period for better chances to stop the infection

Overall, the authors suggest that coffee intake could be a potential dietary strategy to prevent infection in the post-Covid era.

But drink coffee in moderation – the NHS advises drinking more than four cups of coffee a day may increase your blood pressure.

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