This spring, seasonal allergy symptoms are as bad as they've ever been for many people...or worse. Tissues, antihistamines, nose sprays, inhalers and eye drops are constant companions for the growing number of people who suffer from allergies. Around 40 percent of all people have at least one allergic condition today, and unfortunately, the outlook for the future isn't much brighter. Scientific researchers have amassed evidence showing that recent environmental changes are both overwhelming and confusing to our immune systems, helping to drive the increase in the global rate of all allergic conditions throughout the last century. They've found that the changes to the air we breathe correlate with an increased risk of developing allergic disease.
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allergy CET4 CET6
n.过敏反应
I have an allergy to animal hair.
companion CET4 CET6 NETM
n.伴侣；陪伴；同伙；指南，手册
A Companion to Friench Literature
《法国文学指南》
We became companions in misfortune.
outlook CET4 CET6 NETM
n.观点；见解；前景；景色
He had a practical outlook on life.
他的人生观很实际。
The outlook for jobs is bleak.
correlate with 与...相关
A high-fat diet correlates with a greater risk of heart disease.
高脂肪饮食与增加心脏病发作的风险密切相关。
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今年春天，对许多人来说，季节性过敏症状和以往一样严重……或者更糟。纸巾、抗组胺药、鼻喷雾剂、吸入器和眼药水是越来越多的过敏患者的常客。今天，大约40%的人至少有一种过敏症状，不幸的是，未来的前景并不乐观。科学研究人员积累的证据表明，最近的环境变化对我们的免疫系统来说既压倒性又令人困惑，这推动上个世纪全球所有过敏性疾病发病率的上升。他们发现，我们呼吸的空气的变化与患过敏性疾病的风险增加有关。点击链接查看往期文章↓ ↓ ↓ 点进去加个关注再走呗文章节选自：newsweek
原文标题：Are Your Seasonal Allergies Getting Worse?
文章解读：您的季节性过敏症是否变得更糟？如果在过去几年中您感觉眼睛更痒、鼻子更闷或者打喷嚏越来越厉害，那么您可能是对的。原因可能与平均花粉量（空气中花粉量）的变化、空气质量本身（平均而言是好、一般还是差）以及气候变化对一切事物的间接影响有关霉菌孢子的数量对作物生产的影响，对空气循环的影响。气候变化是花粉热症状加重的主要原因。气候变化不仅直接影响了空气中的花粉量和空气质量，还通过左右霉菌孢子的数量、作物产量、热量聚集和空气循环等间接影响了我们的免疫系统。归根结底，自然环境对过敏性刺激的发展影响深远。我们的身体经常接触或不接触的物质会对我们的免疫功能产生重大而持久的影响。但气候变化及其对花粉的巨大影响只是近期过敏激增背后更为复杂的故事的一部分。在过去的两个世纪里，我们对人造环境（例如我们的家和办公室）和我们的生活方式所做的无数改变对我们的免疫功能造成的破坏与对自然环境的改变一样大。
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