Flavonols
Flavonols are a subgroup of flavonoids, plant pigments found in onions, kale, apples, tea and berries. Quercetin, kaempferol and myricetin are the best-known examples.
Also listed as Citrus Bioflavonoids, Citrus Bioflavonoid, Bioflavonoids, Bioflavonoid
What is the link with memory?
In a cohort of 961 older adults followed for an average of 6.9 years, higher dietary flavonol intake was associated with slower cognitive decline. Quercetin and kaempferol showed associations with global cognition; myricetin and isorhamnetin did not. Because this was an observational food study, it cannot establish that supplements prevent cognitive decline. 1
Do fewer colds mean a stronger immune system?
A 2016 review of 14 studies in healthy adults found fewer upper respiratory infections with flavonoid interventions. Changes in measured immune markers were trivial, and fewer sick days remained uncertain. The review covered varied flavonoids, so its pooled finding is not proof for every flavonol product. 2
Why study inflammation and the brain?
A 2023 review describes flavonols altering oxidative-stress and inflammatory signals in cells and animal models of depression. These findings offer mechanisms to investigate. They do not establish an antidepressant treatment or a human longevity benefit. 3
Effects by health goal
Open an effect to see the studies behind its rating. Bars show the size of the effect; the letter grades the evidence.
Longevity1 effect
Immune Support1 effect
Gut Health1 effect
No study is linked to this rating.
Hair & Skin1 effect
No study is linked to this rating.
Weight Management1 effect
No study is linked to this rating.
All studies
8 publications are linked to Flavonols, newest first.