02/20/2026
Ahh…the fountain of youth. One of the most promising sources lies not in pharmaceutical labs, but in your own kitchen. Put a hold on neurotoxins, leave the serums on the shelf until you read the following facts (unless you prefer temporary fixes at high expenses).
Research has identified powerhouse compounds that help our bodies clear dysfunctional cells accumulating with age (zombie cells). These powerful protectors are senolytics. Most importantly, these potent clean-up crews are hiding in everyday foods…possibly already in your kitchen!
So, what are “zombie cells?” Senescent cells that have stopped dividing but refuse to die. As such, lingering in tissues releases a cocktail of inflammatory chemicals. This results in chronic inflammation associated with a multitude of diseases. Senolytics help selectively clear these dysfunctional cells.
In the case of skin, zombie cells are releasing SASPs (Senescence-Associated Secretory Phenotypes). Collagen breaks down, skin barrier weakens, the triggered chronic inflammation leads to:
Loss of firmness & elasticity
Thinner, fragile skin
Increased wrinkles & uneven texture
Inflammation and oxidative stress
From a proactive health position, longevity comes from supporting the body’s natural renewing systems. Enter, compounds to selectively target “zombie cells” and protect healthy tissue from stress. Fisetin is one of those compounds.
Fisetin is a flavonoid that has shown superior effect for senolytic activity in research. Research revealed significantly more effective than other tested flavonoids (quercetin, luteolin, and curcumin). Also, the superiority documented significant health and lifespan extension. But how does it work? Simply, it targets the survival pathways that keep zombie cells alive. Fisetin is able to affect zombie cells without damaging healthy tissue.
The top four sources of fisetin are as follows:
Strawberries (highest concentration)
Apple peels (concentrated in skin)
Grapes (darker varieties)
Onions (yellow and red)
To maximize consumption, choose fresh or frozen vs. processed forms. Fisetin degrades quickly when heated. In apples, the peel houses this powerful compound. Fisetin has also shown neuroprotective effects as well as combatting oxidative stress.
In Another arena, quercetin serves as a metabolic guardian. This well researched flavonoid is the most extensively studied senolytic..Quercetin’s top dietary sources are;
Capers (highest concentration of any food)
Onions (yellow & red)
Turmeric (fresh or dried)
Asparagus (highest in tips)
Please note: as a polyphenol, quercetin has low bioavailability. To maximize absorption, combine with healthy fats and black pepper. Healthy fats dissolve polyphenols while piperine inhibits liver enzymes allowing more quercetin into the bloodstream.
Bottom line….
Once again common kitchen items have shown in research to not only improve health in general, but to also put the brakes on aging. “An Apple a Day” will not only keep the doctor away but will assist in keeping a youthful glow!
Dianna Richardson, ND February 2026
References:
Watanabe S, Kawamoto S, Ohtani N, Hara E. Impact of senescence-associated secretory phenotype and its potential as a therapeutic target for senescence-associated diseases. Cancer Sci. 2017 Apr;108(4):563-569.
Yousefzadeh MJ, Zhu Y, McGowan SJ, Angelini L, Fuhrmann-Stroissnigg H, Xu M, Ling YY, Melos KI, Pirtskhalava T, Inman CL, McGuckian C, Wade EA, Kato JI, Grassi D, Wentworth M, Burd CE, Arriaga EA, Ladiges WL, Tchkonia T, Kirkland JL, Robbins PD, Niedernhofer LJ. Fisetin is a senotherapeutic that extends health and lifespan. EBioMedicine. 2018 Oct;36:18-28.
Degradation kinetics of fisetin and quercetin in solutions affected by medium pH, temperature and coexisted proteins. January 2015. Journal of Serbian Chemical Society, 81(100):92-92
Hassan SSU, Samanta S, Dash R, Karpiński TM, Habibi E, Sadiq A, Ahmadi A, Bunagu S. The neuroprotective effects of fisetin, a natural flavonoid in neurodegenerative diseases: Focus on the role of oxidative stress. Front Pharmacol. 2022 Oct 10;13:1015835.
Hickson LJ, Langhi Prata LGP, Bobart SA, Evans TK, Giorgadze N, Hashmi SK, Herrmann SM, Jensen MD, Jia Q, Jordan KL, Kellogg TA, Khosla S, Koerber DM, Lagnado AB, Lawson DK, LeBrasseur NK, Lerman LO, McDonald KM, McKenzie TJ, Passos JF, Pignolo RJ, Pirtskhalava T, Saadiq IM, Schaefer KK, Textor SC, Victorelli SG, Volkman TL, Xue A, Wentworth MA, Wissler Gerdes EO, Zhu Y, Tchkonia T, Kirkland JL. Senolytics decrease senescent cells in humans: Preliminary report from a clinical trial of Dasatinib plus Quercetin in individuals with diabetic kidney disease. EBioMedicine. 2019 Sep;47:446-456.
Di Lorenzo C, Colombo F, Biella S, Stockley C, Restani P. Polyphenols and Human Health: The Role of Bioavailability. Nutrients. 2021 Jan 19;13(1):273.
Dungan CM, Wells JM, Murach KA. The life and times of cellular senescence in skeletal muscle: friend or foe for homeostasis and adaptation? Am J Physiol Cell Physiol. 2023 Jul 1;325(1):C324-C331