Long COVID is defined as symptoms persisting 12 weeks or more
after the onset of the first symptom (4). Although lungs are considered the main target organ of
COVID-19, the virus can affect many other organs, including the heart, blood
vessels, kidneys, the digestive tract and the brain, through other mechanisms
(6). For example, gut symptoms and fatigue may be associated with the
psychological and physical processes of having suffered COVID-19. On first contact, when symptoms are discussed, clinicians
should run a differential diagnosis to confirm whether these symptoms are
associated with post COVID syndrome.
Symptoms of ongoing
and post COVID-19 syndrome (1, 4), which are related to nutrition, are:
- systemic and musculoskeletal: fatigue, post-exertional
malaise and pain
dizziness, low mood and anxiety
- gastrointestinal: nausea, diarrhoea, anorexia
and reduced appetite
- cardiovascular: breathlessness, myalgia and
cough – myocardial injury is the most common complication, thus self-monitoring blood pressure and pulse oximetry may help
- genitourinary and endocrine: liver dysfunction
and symptoms related to urinary function.
Low and high blood glucose levels may also be common
While some people may experience symptoms similar to CFS, because
is new, we cannot assume that CFS symptoms alleviation will definitely work for
post COVID syndrome.
Further information and access to a screening tool for nutritional issue in long COVID can be found: