{"id":901355,"date":"2026-10-30T09:42:36","date_gmt":"2026-10-30T01:42:36","guid":{"rendered":"https:\/\/www.sandao.com\/green-tea-cancer-prevention-evidence\/"},"modified":"2026-10-30T09:42:36","modified_gmt":"2026-10-30T01:42:36","slug":"green-tea-cancer-prevention-evidence","status":"publish","type":"post","link":"https:\/\/www.sandao.com\/fr\/green-tea-cancer-prevention-evidence\/","title":{"rendered":"Can Green Tea Prevent Cancer? What the Evidence Shows"},"content":{"rendered":"<trp-tag data-no-translation>\n<div class=\"sandao-guide-article\" lang=\"en\">\n<p>Green tea contains catechins, including EGCG, that interest cancer researchers. Laboratory results can reveal biological activity, but they do not prove that a daily drink prevents cancer. Human studies have produced inconsistent results, so a confident promise of cancer prevention goes beyond the available evidence.<\/p>\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/www.sandao.com\/wp-content\/uploads\/2026\/10\/anji-bai-cha-brewing-in-a-tall-glass-beside-a-wooden-scoop.webp\" alt=\"Anji Bai Cha brewing in a tall glass beside a wooden scoop\" width=\"680\" height=\"603\" loading=\"lazy\" decoding=\"async\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\/><\/figure>\n<h2>A compound, an extract and a cup are different exposures<\/h2>\n<p>An isolated compound can be tested at a controlled concentration in cells or animals. An extract capsule has a different composition and dose from brewed tea. Neither can be converted casually into a number of cups. Likewise, a trial reporting a change in an oxidative-damage biomarker has not necessarily measured fewer cancers or lower cancer mortality.<\/p>\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/www.sandao.com\/wp-content\/uploads\/2026\/10\/huangshan-maofeng-green-tea-leaves-in-a-wooden-scoop.webp\" alt=\"Huangshan Maofeng green tea leaves in a wooden scoop\" width=\"680\" height=\"723\" loading=\"lazy\" decoding=\"async\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\/><\/figure>\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/www.sandao.com\/wp-content\/uploads\/2026\/10\/hot-water-poured-over-green-tea-leaves-in-a-clear-glass.webp\" alt=\"Hot water poured over green tea leaves in a clear glass\" width=\"680\" height=\"817\" loading=\"lazy\" decoding=\"async\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\/><\/figure>\n<h2>What human evidence can support<\/h2>\n<p>The Cochrane review found limited, inconsistent evidence rather than an established preventive benefit. Study designs, populations and cancer sites differ. That is a reason to keep researching, not to choose the most favorable isolated finding and apply it to everyone. The NIH NCCIH summary also describes inconsistent cancer results.<\/p>\n<h2>More concentrated is not automatically better<\/h2>\n<p>Brewed tea and high-dose supplements deserve separate consideration. Concentrated green tea extracts can have adverse effects and interactions; they should not be used as a do-it-yourself cancer-prevention protocol. Anyone receiving cancer treatment should discuss supplements with the treating team rather than adding them on the assumption that \u201cnatural\u201d means harmless.<\/p>\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/www.sandao.com\/wp-content\/uploads\/2026\/10\/green-tea-in-a-clear-handled-mug-with-steam-rising.webp\" alt=\"Green tea in a clear handled mug with steam rising\" width=\"681\" height=\"355\" loading=\"lazy\" decoding=\"async\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\/><\/figure>\n<h2>Let hot tea cool before drinking<\/h2>\n<p>The temperature used to extract leaves is not the temperature at which tea should be swallowed. Let any hot beverage cool to a comfortable level. Choosing tea for its flavor is reasonable; using a presumed preventive effect to justify scalding-hot drinking or postponing screening is not supported by this evidence.<\/p>\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/www.sandao.com\/wp-content\/uploads\/2026\/10\/a-clear-glass-of-green-tea-on-a-wooden-coaster-in-soft-light.webp\" alt=\"A clear glass of green tea on a wooden coaster in soft light\" width=\"680\" height=\"881\" loading=\"lazy\" decoding=\"async\" style=\"display:block;max-width:100%;height:auto;margin:20px auto;\"\/><\/figure>\n<h2>Sources and further reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.cochrane.org\/evidence\/CD005004_green-tea-prevention-cancer\" rel=\"noopener\">Cochrane: Green tea for the prevention of cancer<\/a><\/li>\n<li><a href=\"https:\/\/www.nccih.nih.gov\/health\/green-tea\" rel=\"noopener\">NIH NCCIH: Green tea research and safety<\/a><\/li>\n<\/ul>\n<h2>Related guides<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.sandao.com\/chinese-green-tea-glass-vs-gaiwan-brewing\/\">Chinese Green Tea Brewing: Glass Cup or Gaiwan?<\/a><\/li>\n<li><a href=\"https:\/\/www.sandao.com\/chinese-green-tea-aroma-types\/\">Seven Chinese Green Tea Aromas: A Tasting Guide<\/a><\/li>\n<li><a href=\"https:\/\/www.sandao.com\/chinese-green-tea-origin-regions\/\">Nine Chinese Green Tea Origins Worth Knowing<\/a><\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.sandao.com\/encyclopedia\/tea\/\">Explore Tea Knowledge<\/a><\/p>\n<\/div>\n<p><a href=\"https:\/\/www.sandao.com\/chinese-green-tea-types\/\">Ten Chinese green tea styles compared<\/a><\/p>\n<p><a href=\"https:\/\/www.sandao.com\/longjing-43-vs-quntizhong\/\">Longjing 43 and Quntizhong<\/a><\/p>\n<p><\/trp-tag><br \/>\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Separate laboratory findings, green tea extract trials and beverage studies when reading claims that green tea prevents cancer.<\/p>","protected":false},"author":1,"featured_media":901272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[70,47],"tags":[71],"class_list":["post-901355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-green-tea","category-tea-knowledge","tag-green-tea"],"_links":{"self":[{"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/posts\/901355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/comments?post=901355"}],"version-history":[{"count":0,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/posts\/901355\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/media\/901272"}],"wp:attachment":[{"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/media?parent=901355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/categories?post=901355"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sandao.com\/fr\/wp-json\/wp\/v2\/tags?post=901355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}