Evidence supporting the use of: Citrus spp.
For the body system: Gums

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Citrus spp., including species such as Citrus limon (lemon), Citrus sinensis (orange), and Citrus aurantium (bitter orange), are commonly associated with oral and gum health due to their high vitamin C content. There is moderate scientific evidence supporting the use of citrus fruits in maintaining healthy gums. Vitamin C is essential for collagen synthesis and the maintenance of connective tissue, including gingival tissue. Deficiency in vitamin C is historically linked to scurvy, a disease characterized by bleeding gums and poor wound healing. Clinical and observational studies have demonstrated that adequate intake of vitamin C can reduce the risk of gingival bleeding and support periodontal health.

However, while vitamin C from citrus is beneficial, direct application of citrus juice or extracts to gums is not generally recommended due to the acidity, which can erode tooth enamel and potentially irritate soft tissues. Most scientific support is for dietary consumption rather than topical application. Overall, the evidence for citrus supporting gum health is based on the essential role of vitamin C and historical cases of deficiency diseases, with a moderate level of direct scientific validation for prevention and maintenance, but not for treatment of advanced gum disease.

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