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Slimming teas divide into three functional categories: stimulant teas (caffeine/EGCG — real but modest metabolic effect ~80 kcal/day, Dulloo 1999), laxative/diuretic teas (senna, dandelion — produce water and stool loss only, no fat loss), and flavoured teas with no active weight management ingredients. EFSA has not authorised weight loss claims for any slimming tea ingredient. FSA has issued warnings on senna-based detox teas.