Evidence supporting the use of: Lemon
For the health condition: Colds (antiviral)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Lemon has been traditionally used to support the treatment of colds, primarily due to its high vitamin C content and its reputation for boosting immunity. Historical and folk medicine practices across various cultures have recommended lemon in hot teas or drinks to alleviate cold symptoms. The logic behind this is largely based on the association of vitamin C with immune support, as well as the soothing effect of warm lemon beverages on sore throats.

However, the scientific evidence for lemon’s direct antiviral activity against cold viruses (such as rhinoviruses) is limited. While vitamin C supplementation has been extensively studied, research shows only a modest reduction in the duration and severity of cold symptoms, and primarily in individuals under physical stress or with marginal vitamin C status. Lemon itself has not been proven in clinical trials to have significant antiviral effects. However, laboratory studies suggest citrus flavonoids may have some immune-modulating properties.

Overall, the use of lemon for colds is rooted in tradition rather than strong scientific validation. Its consumption may provide symptom relief due to hydration, soothing of the throat, and the psychological comfort of traditional remedies, but should not be considered a primary antiviral treatment. It remains a popular home remedy owing to its history and minimal risk.

More about lemon
More about Colds (antiviral)

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bilberry
bisabolol
black cumin
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catechins
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citrus bioflavonoids
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monolaurin
oregano
perilla
phellodendron amurense
phenolic acids
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pomegranate
quercetin
resveratrol
rhizome
rosemary
schizonepeta
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thyme
vitamin C
vitamin D
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zinc
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Citrus
Chinese Raisintree
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