{"id":36211,"date":"2026-05-03T16:01:41","date_gmt":"2026-05-03T15:01:41","guid":{"rendered":"https:\/\/jegharkraeft.dk\/?p=36211"},"modified":"2026-05-03T16:01:51","modified_gmt":"2026-05-03T15:01:51","slug":"quercetin","status":"publish","type":"post","link":"https:\/\/jegharkraeft.dk\/en\/quercetin\/","title":{"rendered":"Quercetin and cancer"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull is-style-section-5 has-contrast-color has-base-background-color has-text-color has-background has-link-color wp-elements-0eb7eccdfaed35768d98323a0dbb89db has-global-padding is-layout-constrained wp-block-group-is-layout-constrained is-style-section-5--2\" id=\"menu\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-ca2dd60b wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-4690f813fa543a6b8cbb0c82b47a25a3\"><span class=\"ez-toc-section\" id=\"Dietary_Supplements_Grouped_by_Effect\"><\/span><a href=\"https:\/\/jegharkraeft.dk\/en\/kosttilskud-grupperet\/\"><a href=\"https:\/\/jegharkraeft.dk\/en\/kosttilskud-grupperet\/\">Dietary Supplements Grouped by Effect<\/a><\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dietary_Supplements_Alphabetical\"><\/span><a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\">Dietary Supplements Alphabetical<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h4 class=\"wp-block-heading has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-99a0a13c25bef2fa681fbaca8cdcff2f\"><a href=\"https:\/\/jegharkraeft.dk\/en\/acai-berries-and-cancer\/\">A,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/baicalin\/\">B,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/cats-claw-tomentosa\/\">C,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/danshen\/\">D,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/echinacea\/\">E+F,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/garcinia-cambogia\/\">G,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/hemp-seeds\/\">H,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/indol-3-carbinol\/\">I+J+K,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/lions-mane\/\">L,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/maitake\/\">M,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/?p=35837\">N,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/omega-3\/\">O,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/peppermint\/\">P<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-interne-links-color\">,<\/mark><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-hvid-tekst-color\">Q<\/mark>,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/reishi\/\">R,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/selenium\/\">S,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/thc-cannabis\/\">T,<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-sort-tekst-color\">.<\/mark> <a href=\"https:\/\/jegharkraeft.dk\/en\/vitamin-b\/\">U+V+Z<\/a><\/h4>\n\n\n\n<ul class=\"wp-block-list has-custom-hvid-tekst-color has-text-color has-link-color wp-elements-f798e11c65a0bedadd705fe2e67e5f11\">\n<li class=\"has-custom-int-link-p-sort-1-color has-text-color has-link-color wp-elements-65421ad1851bbfd3d1dd4b97f38282fe\"><a href=\"https:\/\/jegharkraeft.dk\/en\/q10\/\">Q10 &#8211; Coenzyme (CoQ10)<\/a><\/li>\n\n\n\n<li class=\"has-custom-her-st-r-du-color has-text-color has-link-color wp-elements-7b1284b7f0756aae3bd2f7a03b2b7617\"><a href=\"#quercetin\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-her-st-r-du-color\">Quercetin (scroll down)<\/mark><\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1312\" height=\"1312\" src=\"https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain.jpg\" alt=\"Quercetin illustreret ved et brunt pilleglas fra MCS Formulas med p\u00e5skriften Quercetin &amp; Bromelain.\" class=\"wp-image-4300\" style=\"aspect-ratio:3\/2;object-fit:cover;width:550px\" srcset=\"https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain.jpg 1312w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-300x300.jpg 300w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-100x100.jpg 100w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-600x600.jpg 600w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-1024x1024.jpg 1024w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-150x150.jpg 150w, https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain-768x768.jpg 768w\" sizes=\"auto, (max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull is-style-default has-global-padding is-layout-constrained wp-container-core-group-is-layout-b040ace0 wp-block-group-is-layout-constrained has-background\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--20);background-image:url(&apos;https:\/\/jegharkraeft.dk\/wp-content\/uploads\/2025\/02\/bQuercetin-Bromelain.jpg&apos;);background-position:44% 36%;background-size:cover;\">\n<div class=\"gb-element-906497af\">\n<h1 class=\"wp-block-heading\" id=\"quercetin\"><span class=\"ez-toc-section\" id=\"Quercetin_and_cancer\"><\/span>Quercetin and cancer<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h4 class=\"wp-block-heading\">What is quercetin<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin is a natural flavonoid found in many fruits, vegetables, and plants. It has antioxidant and anti-inflammatory properties that have shown potential in the prevention and treatment of cancer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_quercetin_works\"><\/span>How quercetin works<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin&#8217;s potential against cancer is believed to stem from several mechanisms:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Antioxidants<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin can neutralize free radicals that can damage cells and contribute to cancer development.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Anti-inflammatory<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chronic inflammation is associated with an increased risk of cancer. Quercetin&#8217;s anti-inflammatory properties can therefore be beneficial.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inhibits cancer cell growth<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin can disrupt cancer cells&#8217; signaling pathways and prevent them from growing and spreading.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Strengthens the immune system<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin can strengthen the immune system&#8217;s ability to fight cancer cells.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Metabolic_reprogramming_and_signaling_pathways\"><\/span>Metabolic reprogramming and signaling pathways <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Recent research shows that quercetin can interfere with how cancer cells use fat and energy to survive. By blocking specific growth signals, quercetin makes it harder for the tumor to grow and spread. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Studies also suggest that quercetin works particularly well when combined with other substances; for example, a strong synergistic effect against breast cancer has been observed when combined with sulforaphane [4, 9].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overcoming_bioavailability_challenges\"><\/span>Overcoming bioavailability challenges <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A challenge with quercetin is that the body normally has difficulty absorbing it in large enough quantities. Therefore, researchers are working on new solutions, such as wrapping the substance in tiny fat particles (liposomes) or using a &#8220;nano-gel&#8221; [6, 8]. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These methods help quercetin penetrate the cancer cells&#8217; protective shield, making the treatment far more effective than standard supplements [5, 6].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Benefits_of_quercetin\"><\/span>Benefits of quercetin<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Potentially preventive effect<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Studies have shown that a high intake of quercetin-rich foods may be associated with a lower risk of developing certain types of cancer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Support for conventional treatment<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some studies suggest that quercetin can improve the effect of chemotherapy and radiation therapy and reduce side effects [4, 9].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Relatively few side effects<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin is generally considered safe when taken in moderate doses from foods or dietary supplements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Disadvantages_of_quercetin\"><\/span>Disadvantages of quercetin<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Limited evidence<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">More research is needed to confirm quercetin&#8217;s effectiveness in cancer prevention and treatment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Interactions with medication<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin can interact with certain medications, so it is important to talk to your doctor before taking it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Side effects at high doses<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">High doses of quercetin can cause side effects such as stomach discomfort, diarrhea, and headache.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Research\"><\/span>Research<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Research into quercetin&#8217;s cancer-fighting properties is still ongoing. Several laboratory and animal studies have shown promising results, but more comprehensive clinical studies are needed to confirm the effect in humans [1, 2].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quercetin is a natural flavonoid found in many fruits and vegetables that has antioxidant and anti-inflammatory properties. It appears to have potential in the fight against cancer by combating free radicals, reducing inflammation, inhibiting cancer cell growth, and strengthening the immune system. Some studies suggest that a high intake of quercetin may be associated with a lower risk of certain types of cancer and can help improve the effect of chemotherapy and radiation therapy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Although there are promising results, much of the research is still at an early stage, and we need more studies to understand how quercetin works in humans. It is also important to be aware that it can interact with certain medications and cause milder side effects at high doses. Quercetin should be considered as a supplement that can support a healthy lifestyle, but not as a replacement for traditional treatments. With more research, quercetin may gain a more important role in the overall approach to cancer treatment and prevention.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"quercetin\">Back to <a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\" target=\"_blank\" rel=\"noreferrer noopener\">Supplements<\/a><\/p>\n\n\n\n<p class=\"has-custom-menu-links-color has-text-color has-link-color wp-elements-9190cfe395c28e4d2ec89873338ddaa5 wp-block-paragraph\"><a href=\"#menu\">(to menu)<\/a><a href=\"https:\/\/jegharkraeft.dk\/en\/supplements-alphabetically\/\"><\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Links<\/h4>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-8c69e888293e99fe3a2e68d3d48b372d wp-block-paragraph\">[1] <a href=\"https:\/\/www.frontiersin.org\/journals\/immunology\/articles\/10.3389\/fimmu.2023.1077531\/full\" target=\"_blank\" rel=\"noreferrer noopener\">The potential anti-cancer effects of quercetin on blood, prostate and lung cancers<\/a> (Frontiers, 2023) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: Review article examining the potential anti-cancer effects of quercetin.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-a7871554846b90ac2edbad7f3138b0c4 wp-block-paragraph\">[2] <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7063794\/\" target=\"_blank\" rel=\"noreferrer noopener\">Quercetin and cancer<\/a> (PubMed, 2020) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: Review article on quercetin and cancer.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-6a4a004f1202f024dba7132aa5b46498 wp-block-paragraph\">[3] <a href=\"https:\/\/www.mskcc.org\/cancer-care\/integrative-medicine\/herbs\/quercetin\" target=\"_blank\" rel=\"noreferrer noopener\">Quercetin<\/a> (Memorial Sloan Kettering Cancer Center, 2023) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: General information about quercetin from a leading cancer center.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-ee0f8eb0ac3108e5cd707668e748e146 wp-block-paragraph\">[4] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40412371\/\" target=\"_blank\" rel=\"noreferrer noopener\">The role of quercetin in modulating lipid metabolism and enhancing chemotherapy via the STAT3-CPT1B pathway in pancreatic cancer<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that quercetin has an anti-cancer effect by disrupting cancer cells&#8217; lipid metabolism via the STAT3 signaling pathway, and also shows an enhanced therapeutic effect when combined with the chemotherapy drug gemcitabine.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-096984b1fe8ab42e439c702cfb4f0ba5 wp-block-paragraph\">[5] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40209461\/\" target=\"_blank\" rel=\"noreferrer noopener\">Structural related oxidovanadium(IV)-flavonoid complexes. Influence on their anticancer effects<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that by binding the metal vanadium to flavonoids such as quercetin, researchers have enhanced their anti-cancer effect. The combination converts the normally protective flavonoids into &#8220;pro-oxidants&#8221; that selectively kill lung cancer cells by creating targeted oxidative stress, while largely sparing normal cells.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-13aef334d0bab962f9a7cdafe18ef782 wp-block-paragraph\">[6] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40127723\/\" target=\"_blank\" rel=\"noreferrer noopener\">Quercetin liposomes conjugated with hyaluronidase: An efficient drug delivery system to block pancreatic cancer<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that researchers have developed a new &#8216;2-in-1&#8217; strategy against pancreatic cancer, where an enzyme first breaks down the tumor&#8217;s protective shield. This then allows the active substance, quercetin, to penetrate deeply and kill the now vulnerable cancer cells.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-4d2b3368de3ffee5d0cf88728528e6b9 wp-block-paragraph\">[7] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40478357\/\" target=\"_blank\" rel=\"noreferrer noopener\">Unveiling the mechanisms of Tianjihuang in hepatocellular carcinoma: a network pharmacology and molecular docking study<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that a leaf extract from the medicinal plant <em>Tabebuia pallida<\/em>, which contains active substances such as quercetin and lapachol, shows strong anti-cancer effect by forcing cancer cells into programmed cell death (apoptosis).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-45d09c544246da0dbc9e8304f30d4948 wp-block-paragraph\">[8] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40394846\/\" target=\"_blank\" rel=\"noreferrer noopener\">Assessment of Cytotoxic Effects of Quercetin Nanoemulgel on Different Skin Cancer cell lines<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study indicating that a &#8220;nanoemulgel&#8221; is an effective delivery method that improves both the solubility and the therapeutic effect of the substance quercetin.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-5c4927c3a1d9e65365b5afb5cc65aa0c wp-block-paragraph\">[9] <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/39760839\/\" target=\"_blank\" rel=\"noreferrer noopener\">Synergistic Inhibition of Breast Carcinoma Cell Proliferation by Quercetin and Sulforaphane via Activation of the ERK\/MAPK Pathway<\/a> (PubMed, 2025) <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content: In vitro study showing that a combination of the dietary supplements quercetin and sulforaphane has a strong synergistic and cell-killing effect against breast cancer cells. The effect is achieved by creating destructive oxidative stress and blocking the central ERK\/MAPK growth signaling pathway.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-custom-sort-tekst-color has-text-color has-link-color wp-elements-d06021807d032f5bde8e29996ad3582b wp-block-paragraph\"><strong>Page created:<\/strong><br>July 1, 2024, Last revised June 9, 2025<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-custom-menu-links-color\">\u2764<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>What you read on &#8220;Jeg har Kr\u00e6ft&#8221; is not a recommendation. Seek competent guidance.<\/em><\/strong><\/p>\n<\/div>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Indhold<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Dietary_Supplements_Grouped_by_Effect\" >Dietary Supplements Grouped by Effect<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Dietary_Supplements_Alphabetical\" >Dietary Supplements Alphabetical<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Quercetin_and_cancer\" >Quercetin and cancer<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#How_quercetin_works\" >How quercetin works<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Metabolic_reprogramming_and_signaling_pathways\" >Metabolic reprogramming and signaling pathways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Overcoming_bioavailability_challenges\" >Overcoming bioavailability challenges<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Benefits_of_quercetin\" >Benefits of quercetin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Disadvantages_of_quercetin\" >Disadvantages of quercetin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Research\" >Research<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/jegharkraeft.dk\/en\/quercetin\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dietary Supplements Grouped by Effect Dietary Supplements Alphabetical A,. B,. C,. D,. E+F,. G,. H,. I+J+K,. L,. M,. N,. O,. P,. Q,. R,. S,. T,. U+V+Z Quercetin and cancer What is quercetin Quercetin is a natural flavonoid found in many fruits, vegetables, and plants. It has antioxidant and anti-inflammatory properties that have shown potential in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":36210,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[389,375,374],"tags":[],"class_list":["post-36211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-supplements","category-alternative-treatments","category-treatments"],"modified_by":"Hanne Kj\u00e6r Uhlig","wpml_current_locale":"en_US","wpml_translations":[],"_links":{"self":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/comments?post=36211"}],"version-history":[{"count":2,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36211\/revisions"}],"predecessor-version":[{"id":36216,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/posts\/36211\/revisions\/36216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/media\/36210"}],"wp:attachment":[{"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/media?parent=36211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/categories?post=36211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jegharkraeft.dk\/en\/wp-json\/wp\/v2\/tags?post=36211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}