寒冷的天气里，
吃火锅成为不少朋友的一种享受。
不过吃火锅也得当心，
最近就有一位女士，
吃完火锅后，竟然吐血了。
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日前，萧山张女士跟朋友聚会吃完火锅后，感觉喉咙口、胸口疼痛，吞咽有异物感，回家之后还觉得反胃想吐，跑去卫生间一吐，竟吐出一大口鲜血。
“当时以为自己可能是因为吞下了什么骨头，刮伤了喉咙，没有特别在意。”
但是张女士休息了一晚后并没有好转，喉咙一直有异物感，甚至连吞口水都感到困难，而且次日晚上再次呕吐出血。
知道不妙的张女士连忙到医院挂了消化内科。医师听说她在前天晚上吃火锅后就出现了疼痛症状，且休息一晚后没有好转，就考虑到她可能是食道烫伤，并建议她进行胃镜检查。
胃镜一检查，果然张女士食道22cm有一处较大的溃疡。
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“没想到吃火锅还能吃‘吐血’，下次再也不敢狼吞虎咽了。”张女士一脸懊悔。
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医生告诫张女士，吃得太烫、太快，不仅会损害食道和消化器官，长期为之还会致癌
测量食物的温度并不困难，但事实上，没人会随身带着温度计去测量食物的温度。
那么，65°C的食物有多烫？有人用温度计逐一进行了测试。
将65℃水滴一滴到手背上，有痛感；喝一小口，有灼热感，且下咽困难；水杯外侧，徒手无法直接握住。所以，65℃水，一个字，烫。
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刚从超市买来盒装的常温牛奶，倒在碗子里在微波炉里加热90秒后，无法徒手拿出来（需借助隔热手套）测量温度，显示71.0℃。
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静置五分钟后，测量温度显示58.9℃，此时入口没有灼烫感，比较舒服。
冲了一杯咖啡，搅拌均匀，测温度，当温度显示61.1℃时喝下去，个人感觉入口略烫，需要吹气并且小口小口呷。
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看来对于普通人来说，65℃应该就是感受极限了！但对于长期吃烫食的人来说要小心了，因为忍受力的不同，如果你觉得吹吹气，觉得入口还是很烫的话，很可能已经超过65℃了！
过10分钟，再次测量温度时，显示47.4℃，此时入口口感舒爽。
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五分钟后，再次测量，温度下降到49.6℃，此时可一口吞，但需慢慢下咽。
热气腾腾刚端上桌的小笼包，测量温度只有67.8℃，但依然无法一口吞。静放三分钟后，再次测量温度，显示42.9℃，此时可一口吞，没有灼热感，咀嚼后下咽也没有不舒服感。
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一串年糕在铁板上烤熟，然后立刻测量，温度显示66.4℃，但可以小口小口咬着吃。如果是烤一些鸡腿、鸡翅类的，温度会更高。
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这两年，关东煮是越来越火爆。大冬天的加完班，没下班的只剩下24小时便利店，吃上一口关东煮，幸福感就会飙升。但是刚出锅的关东煮，立刻测量温度，显示69.0℃。
静放五分钟后再次测量，温度降至59.7℃，油豆腐可直接入口吃，汤汁需小口小口喝。
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实验做到此，65℃吃进嘴里究竟什么感觉，大概你心里已经有谱了。你看，只要冷几分钟而已，烫嘴的食物就能变得安全，为何不多等等呢？总之，如果你已经感觉烫了，那就等一会再享用吧！