Unverified83% confidenceTradeoffTime unknown
所谓'燃脂'成分中,绿茶提取物(EGCG)需≥250mg/日、左旋肉碱需≥2g/日才有微弱代谢提升证据,且效果远小于饮食运动,单靠补剂减脂不现实
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83%
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Long-term
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Unverified宣称'燃脂'的绿茶素饮品,有效EGCG单日需达300-400mg才具备文献支持的代谢促进效果,多数市售即饮茶饮EGCG含量不标注或<50mg,实际效果有限90% similarUnverified有效的代谢促进类饮料需含绿茶提取物且EGCG(表没食子儿茶素没食子酸酯)含量≥100mg/份,单纯标注'绿茶风味'无剂量说明的多为营销概念83% similarUnverified选购时优先看EGCG标注含量而非总多酚或总儿茶素含量,EGCG是绿茶最主要活性成分,标注'绿茶提取物500mg'但不标EGCG含量的产品,实际EGCG可能仅50-100mg甚至更低82% similarUnverified绿茶提取物(EGCG)与咖啡因协同时热效应证据较强,选购时看EGCG含量≥200mg/份,但单日EGCG超过800mg存在肝损伤风险,需避免空腹大剂量服用80% similarUnverified绿茶提取物中EGCG含量通常占儿茶素的50-80%,优质标准化提取物EGCG可达45-50%,而普通提取物可能仅含10-20%儿茶素77% similar
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