According to Professor Andrew Chan of the prestigious Harvard School of Medicine, what you eat could influence whether you become infected or not in the first place.
His line of thought is not unfounded; indeed, the concept is based on data from 1.1 million people. Participants in the COVID-19 symptoms study were asked to complete surveys on pre-pandemic and post-pandemic eating habits..
Using this data set, individuals were grouped into those with low, moderate or high-quality diets.
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Outcomes were also independent of other COVID-19 risk factors, such as:
- Age
- Weight
- Race
- Ethnicity
- Underlying health conditions.
The pre-print study was discussed on a webinar led by Covid Symptom Study lead, Professor Tim Spector.
Other experts on the panel included Dr Sarah Berry – a reader at King’s College London – and Emily Leeming, a registered dietician.
As for high-quality nutrition, Leeming explained what this would mean.
A high-quality diet should supply you “enough energy and nutrients to live an active, fulfilled life”.
Usually, this includes lots of plant-based foods, including fruits, vegetables, and whole grains.
Moreover, you need foods that nourish the microbes that live in your gut that support your immune system.
People are encouraged to increase their intake of:
- Legumes
- Nuts
- Seeds.
In addition, it may be beneficial to add fermented foods into your diet, such as yoghurt or kefir.
These contain beneficial probiotic bacteria that can help support your gut health.
As for a low-quality diet – one that increases your risk of catching Covid and suffering from worse outcomes – what foods will be in that group?
Leeming’s answer is “ultra-processed foods”, such as packaged bread, breakfast cereals, chocolate and soft drinks.
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