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Health – Overcoming post-viral fatigue

By Siobhán Carroll – BA; Dip Nat; Dip Herb; MANP; MGNC

Fatigue is a common symptom of many different illnesses. It is a normal part of the body’s response to fighting an infection. Usually fatigue goes away quickly once the body has dealt with the infection. But sometimes fatigue can linger for weeks or months after you’ve been sick with a viral infection, such as COVID-19.

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Post-viral fatigue is when the fatigue that started with a viral infection continues for a longer period of time after the infection has gone. In the context of COVID-19, post-viral fatigue is also commonly referred to as long COVID. While most people recover quickly from coronavirus, some people have ongoing symptoms that can last for a few weeks or longer.

Extreme tiredness, shortness of breath, ‘brain fog’ and chest pains are among the dozens of long COVID symptoms reported by long COVID patients, many of whom have been off work for months.

And these symptoms are not limited to people who were seriously unwell or hospitalised with coronavirus. Post-viral fatigue affects people of all ages, including children, young people, and adults of all ages. The severity and length of time that someone experiences fatigue doesn’t always reflect the severity of the initial infection or their previous fitness levels. Some people can be very unwell at the start of the illness but recover relatively quickly, whilst other people may only have a mild viral illness but go on to have debilitating fatigue for a long time afterwards.

Scientists and doctors are still trying to understand the cause of long COVID. Whilst there are still many unanswered questions, there’s a lot you can do right now to feel better, starting with your immune system.

Support your immune system

You want your immune function to have everything it needs to mount a healthy response to a virus, but it also needs to recover from its efforts getting you through the virus. If you’ve been battling the effects of COVID-19, your immune system may be in a state of imbalance. A good first step is to nourish and help replenish your immune system. New research published in the past year shows that getting enough vitamin D helps immune system function, with studies showing it prevents severe COVID symptoms[1] and also helps immune function ‘bounce back’ post-virus[2]. If vitamin D levels are low a vitamin D supplement can help.

Vitamin C is also important for immune health. It is well documented for aiding in the prevention of colds and other infections and one way it does this is by encouraging the production of white blood cells that help protect the body against infection[3].

A vitamin C supplement with bioflavonoids to aid absorption, or one sourced from fruit a great place to start. Try A.Vogel’s Nature-C.

Echinacea is also beneficial for the immune system. It works by improving the way the immune system responds to bugs, especially the common cold, it reduces the severity of cold symptoms and the duration of colds and flu,[4] and it can reduce the likelihood of repeated cold or flu infections[5]. It can even kick COVID’s butt. Research carried out during the pandemic shows that Echinacea can reduce your chances of catching enveloped respiratory tract viruses by 51% (of which COVID is one)[6], reduce your chances of catching SARS-CoV-2 by 63%[7] and reduce viral load in cases of infection by 99%8.

There are several varieties of Echinacea plant, but Echinacea purpurea has a greater amount of scientific evidence behind it than any other herbal remedy. It also shows antiviral action against all coronavirus variants known so far, including the Omicron variant.

Balance your microbiome

Since almost 80% of your immune cells reside in the gut, good gut flora is essential for balanced immune function. What’s more, researchers now point to a specific link between long COVID symptoms and the human gut microbiome. One study, published in the journal Gut, found that people with long COVID had ‘distinct’ differences in their gut microbiome compared to individuals who hadn’t had a coronavirus infection. A less diverse gut microbiome has been linked to long COVID patients and at six months post virus, fewer ‘friendly’ bacteria and a greater abundance of ‘unfriendly’ bacteria, when compared with people who hadn’t had COVID-19. Those people who didn’t develop long COVID had fewer changes in their gut microbiome, with complete recovery at the end of the six months. In fact, the gut microbiome of people who didn’t develop long COVID was so similar to non-COVID patients, that it lead researchers to conclude that ‘…if you have a more balanced microbiome at the beginning, you will be able to fight [COVID] symptoms… or you will at least recover much faster.’[8]

There’s only so much space in the gut, so the more friendly bacteria you add, the less room there is for unfriendly bacteria. Probiotics promote a healthy balance of gut flora by introducing healthy bacteria to the gut, which in turn helps control levels of unfriendly bacteria and yeast.

Fight fatigue with vitamin B

The main symptom of post-viral fatigue and long COVID is a significant lack of energy, which can impact on every part of life including school or work, home life, social activities, sport and relationships.

Foods rich in B vitamins, such bananas, oats and beans, or a vitamin B Complex is usually recommended if energy levels are low, because B vitamins help to convert food into energy.

Vitamin B12 is especially important for red blood cell formation and energy release. We only need a small amount, circa 1.5 mcg per day, but because it is mainly found in animal products, vitamin B12 deficiency can be an issue for vegans and vegetarians, in which case a B12 supplement is usually recommended.

[1] What is the link between vitamin D levels and COVID-19? (ucdavis.edu)

[2] Vitamin D and COVID-19: An Overview of Recent Evidence – PMC (nih.gov)

[3] https://pubmed.ncbi.nlm.nih.gov/25157026/

[4] https://www.hindawi.com/journals/ecam/2012/841315/

[5] https://www.ncbi.nlm.nih.gov/pubmed/25784510

[6] Jawad M, Schoop R, Suter A, Klein P, Eccles R. Safety and Efficacy Profile of Echinacea purpurea to Prevent Common Cold Episodes: A Randomized, Double-Blind, Placebo-Controlled Trial. Evidence-Based Complementary and Alternative Medicine. 2012:841315. doi: 10.1155/2012/841315.

[7] Kolev E, Mircheva L, Edwards MR, et al. Echinacea purpurea for the Long-term Prevention of Viral Respiratory Tract Infections during COVID-19 Pandemic: A Randomized, Open, Controlled, Exploratory Clinical Study. medRxiv 2021.12.10.21267582; doi: https://doi.org/10.1101/2021.12.10.21267582.

[8] Gut microbiota dynamics in a prospective cohort of patients with post-acute COVID-19 syndrome | Gut (bmj.com)

Siobhán Carroll

About Siobhán

Siobhán Carroll is a fully qualified clinical Herbalist and Naturopath based in Ireland. She runs her own clinic in Co. Clare and online via her website nerdynaturopath.com. She has 10 years of experience in the field of natural health, she also teaches yoga and meditation and is a lecturer at the College of Naturopathic Medicine.

Siobhán is also a cold-water sea swimmer, a loving mum and a massive Harry Potter fan. She has a deep connection with plants and is passionate about empowering people to look after their own health using the healing powers of nature.

Siobhán Carroll BA; Dip Nat; Dip Herb; MANP; MGNC

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