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Quercetin: Difference between revisions

357 bytes removed ,  3 October 2023
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=== Background Intake ===
=== Background Intake ===
Quercetin is one of the most abundant dietary flavonoids. <ref name="lpi">{{cite web|url=http://lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/flavonoids|title=Flavonoids|publisher=Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR|date=November 2015|access-date=1 April 2018}}</ref><ref name="usda" /> Values for the estimated intake of quercetin by the U.S. population from naturally-occurring sources can also be generated using the available data on the quercetin content of foods from the flavonoid database combined with food intake data from the National Center for Health Statistics' (NCHS) National Health and Nutrition Examination Surveys (NHANES) for the years 2003-2004. Individuals that did not report consuming a naturally occurring food source for quercetin were excluded from these analyses. Total quercetin intakes from background sources are presented in the following table. Consumption of these types of foods by the total US. population resulted in estimated mean and 90th percentile all user background intakes of quercetin of 5.9 and 14.7 mg/person/day, respectively. A maximum quercetin all-user intake value of 258.2 mg/day also was generated. This value represents the highest individual reported quercetin intake from all naturallyoccurring quercetin sources and occurred in the male adult population group. Given that the quercetin content is only available for selected foods, it is likely that actual background intakes are higher than these estimates.
Quercetin is one of the most abundant dietary flavonoids. <ref name="lpi">{{cite web|url=http://lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/flavonoids|title=Flavonoids|publisher=Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR|date=November 2015|access-date=1 April 2018}}</ref><ref name="usda" /> To estimate the average quercetin intake of the U.S. population, data from the flavonoid database was combined with food consumption data from the 2003-2004 National Health and Nutrition Examination Surveys (NHANES). Only individuals who reported consuming foods naturally rich in quercetin were included in the analysis.
 
The table below presents the estimated daily quercetin intake from natural sources for various U.S. population groups. The overall consumption of quercetin-rich foods led to an estimated average intake of 5.9 mg/person/day, with the 90th percentile at 14.7 mg/person/day. The highest reported individual intake was 258.2 mg/day, observed in the adult male group. It's worth noting that these estimates might be on the conservative side, as quercetin content data is available only for select foods.
 
{| class="wikitable"
{| class="wikitable"
|+Summary of the Estimated Daily Background Intake of Quercetin from Naturally Occurring Sources in the United States by Population Group (2003-2004 NHANES Data and USDA Database for the Flavonoid Content of Selected Foods) <ref name="GRN341" />
|+Summary of the Estimated Daily Background Intake of Quercetin from Naturally Occurring Sources in the United States by Population Group (2003-2004 NHANES Data and USDA Database for the Flavonoid Content of Selected Foods) <ref name="GRN341" />
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