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【多选题】
过量饮浓茶,对健康非常不利,这是因为( )。A.
过高浓度的咖啡碱和多酚类等物质对肠胃产生强烈刺激，会抑制胃液分泌，影响消化功能
B.
增加心、肾负担
C.
茶中的生物碱将使中枢神经过于兴奋，心跳加快
D.
晚上还会影响睡眠
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