Fisetin

Food or supplementMeasured in people, not heightBy mouthNutrient
A plant compound from fruit, sold both as a sirtuin booster and as something that clears out worn-out cells.
A flavonol found in strawberries and other fruit, sold as a supplement, with a dual reputation: a sirtuin activator and a senolytic, meaning a compound that kills worn-out cells rather than repairing them.
Risks. A supplement, not an approved medicine. Clearing out old cells is not obviously a good idea in a skeleton that is still growing.
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Educational content, not medical advice. Nothing here is a recommendation to take or stop taking anything — talk to a doctor about your own situation.