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美顏養生道持續關注中老年健康. 以專業、權威、全面的中醫知識呵護您! 歡迎您關注訂閱加入我們的大家庭 人們的身體上有一些地方是自己不太容易看到的，比如腳底，比如屁股。前段時間李女士和女兒一起去泡澡的時候，發現兩個人的臀部都有黑黑的印子。她們覺得很奇怪。明明屁股是很少暴露在外面的，為什麼屁股上會有“黑印子”？ 為什麼屁股上會有“黑印子”？ 在人們的骨盆下方，有兩個大的結界，叫做坐骨結節，當人們坐著的時候，會向這個位置不停的施加壓力，保持人們能夠穩穩的坐在椅子上。但有些人會發現，坐著的時候，總是不自覺地往下滑。這時屁股上的肉就會反復的受到摩擦。 這一部位的皮膚會為了避免反復摩擦而造成損傷，就會可以的“增厚”自己。讓坐骨結節部位的皮膚更厚，能夠更“耐磨”。在長時間的壓迫、摩擦後，人體原本透明色的角質層會不斷的堆積，從而出現顏色比較深的印子，最終形成了屁股上兩團比較大的“黑印子”。 總結來看，屁股上的黑印子和3個因素有關
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