Quercetin, a naturally occurring flavonoid found in many fruits, vegetables, leaves, and grains, has attracted significant attention for its potential health benefits and therapeutic ability in both animal models and humans.
Quercetin is in foods like berries and apples which are particularly rich sources.
However, its bioavailability is influenced by the form in which it’s consumed, this is why we have chosen fermented quercetin in JointButter®. The fermentation process makes the active ingredients more potent.
A study by Moon, Wang, DiCenzo, & Morris (2008).[1] and Graefe, Derendorf, & Veit (1999).[2] has shown that quercetin’s bioavailability in humans is relatively low, suggesting that dietary intake or supplementation needs careful consideration to achieve therapeutic effects.
Concerning safety, Harwood et al. (2007) provided a comprehensive review, arguing that quercetin is safe with no evidence of in vivo toxicity or carcinogenic properties.[3] at consumption levels achievable through diet or supplementation.
Quercetin’s anti-inflammatory and immunomodulatory effects are well-documented. Davis, Murphy, & Carmichael (2009)[4] and Konrad & Nieman (2015)[5] discussed its potential to enhance physical performance and reduce illness by modulating immune function. These benefits are particularly notable in the context of exercise-induced stress, suggesting quercetin’s role in supporting recovery and also reducing susceptibility to respiratory infections.
The antioxidant properties of quercetin, as reviewed by Young et al (1999)[6], contributes to its protective effects against oxidative stress, potentially reducing the risk of chronic diseases, including cardiovascular diseases and cancer.
Rauf et al. (2018).[7] and Niedzwiecki et al. (2016).[8] explored quercetin’s anticancer efficacy, highlighting its ability to modulate various signaling pathways involved in cancer progression. The flavonoid’s role in regulating the expression of genes related to cancer cell survival, growth, and metastasis underscores its potential as a complementary therapy in cancer treatment.
One study by Jia. (2019).[9] demonstrated quercetin’s protective effects against atherosclerosis by influencing the markers related to lipid metabolism and cholesterol regulation. These findings suggest quercetin could be a beneficial dietary component in preventing cardiovascular diseases.
Based on available research, quercetin is an attractive ingredient for advanced dietary supplements providing wide-ranging health benefits, including anti-inflammatory, immuno-modulatory, antioxidant, and anti-cancer properties.
Graefe, E. U., Derendorf, H., & Veit, M. (1999). Pharmacokinetics and bioavailability of the flavonol quercetin.
Davis, J. M., Murphy, E. A., & Carmichael, M. D. (2009). Effects of the dietary flavonoid quercetin upon performance and health.
Young, J. F., et al. (1999). Effect of fruit juice intake on urinary quercetin excretion and biomarkers of antioxidative status.
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