<section><p style="white-space: normal; margin: 15px 0px; padding: 0px; box-sizing: border-box; visibility: visible; text-indent: 2em; line-height: 2em;"><span style="visibility: visible; font-size: 18px;">贫血的人，心脏在替你拼命，你知道吗？</span></p><p style="white-space: normal; margin: 15px 0px; padding: 0px; box-sizing: border-box; visibility: visible; text-indent: 2em; line-height: 2em;"><span style="font-size: 18px;"><strong style="font-size: 18px; text-indent: 2em; box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;">一、贫血的人，心脏有多累？</span></strong><strong style="font-size: 18px; text-indent: 2em; box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;"></span></strong></span></p></section><p></p><section><section><section><section></section></section></section></section><section><p style="white-space: normal; margin: 15px 0px; padding: 0px; box-sizing: border-box; visibility: visible; text-indent: 2em; line-height: 2em;"><span style="font-size: 18px;"><span style="font-size: 18px; visibility: visible;">正常状态下，血液里的红细胞像一艘艘运氧船，把肺里的氧气运到全身各个器官。</span><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;">贫血就是运氧船数量严重不足，血液的携氧能力大幅下降。</span></strong><span style="font-size: 18px; visibility: visible;">身体各器官收不到足量氧气，会发出“缺氧警报”，而</span><span style="font-size: 18px; color: rgb(159, 32, 24); box-sizing: border-box; visibility: visible;"><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;">心脏作为全身供血的“总泵站”，唯一能做的就是加速跳动、加大泵血量，试图用速度弥补数量上的缺口。</span></strong><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;"></span></strong><strong style="box-sizing: border-box; visibility: visible;"></strong></span></span></p><p style="text-align: center; margin-top: 15px; margin-bottom: 15px; line-height: 2em;"><img src="/ueditor/php/upload/image/20260707/1783390294425614.png" title="1783390294425614.png" alt="image.png"/></p></section><section><p style="white-space: normal; margin: 15px 0px; padding: 0px; box-sizing: border-box; visibility: visible; text-indent: 2em; line-height: 2em;"><span style="font-size: 18px;"><span style="font-size: 18px; visibility: visible;">每分钟多跳10到20次，一天累积下来就是一万五千次以上。一年就是五百多万次额外跳动。短期看似乎没什么，</span><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;">但心肌本身也是需要氧气供应的肌肉，跳得越猛、耗氧量越大，偏偏贫血时心肌自己也缺氧气，</span></strong><span style="font-size: 18px; visibility: visible;">这就成了一个悖论：</span><span style="font-size: 18px; color: rgb(159, 32, 24); box-sizing: border-box; visibility: visible;"><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;">心脏越拼命干，自己越缺氧，效率反而越低。</span></strong><strong style="box-sizing: border-box; visibility: visible;"><span style="font-size: 18px; visibility: visible;"></span></strong><strong style="box-sizing: border-box; visibility: visible;"></strong></span></span></p><p style="white-space: normal; margin: 15px 0px; padding: 0px; box-sizing: border-box; visibility: visible; text-indent: 2em; line-height: 2em; text-align: center;"><img src="/ueditor/php/upload/image/20260707/1783389145422777.png" title="1783389145422777.png" alt="image.png" width="172" height="171"/><span style="font-size: 18px;">