Related Experiment Video

Updated: Aug 20, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
09:50

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Published on: August 14, 2019

Dietary flavonoids and cancer risk: evidence from human population studies

Marian L Neuhouser1

  • 1Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA. mnuhous@fhcrc.org

Nutrition and Cancer
|December 2, 2004
PubMed

Insights

Flavonoids, found in fruits and vegetables, may lower cancer risk, particularly lung cancer. Further research is needed to confirm these chemoprotective effects and inform public health recommendations.

Area of Science:

  • Nutritional Science
  • Oncology
  • Biochemistry

Background:

  • High fruit and vegetable intake is linked to reduced cancer risk.
  • The specific bioactive compounds responsible for these chemoprotective effects remain largely unknown.
  • Flavonoids are a class of plant compounds with potential anti-cancer properties.

Purpose of the Study:

  • To review human population studies examining the association between flavonoid intake and cancer risk.
  • To evaluate the evidence for flavonoids, particularly quercetin, in cancer chemoprevention.

Main Methods:

  • Systematic review of four cohort studies and six case-control studies.
  • Analysis of existing human population data on flavonoid consumption and cancer incidence.

Main Results:

  • Consistent evidence suggests flavonoids, especially quercetin, may reduce lung cancer risk.
  • Limited human population data currently exists on the broader impact of flavonoids on other cancers.
  • In vitro and animal studies indicate flavonoids influence key carcinogenesis mechanisms.

Conclusions:

  • Flavonoids show promise as chemopreventive agents, particularly against lung cancer.
  • Further research with updated dietary flavonoid databases is necessary.
  • Specific public health recommendations regarding flavonoid intake cannot yet be formulated.

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