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25 Facts About Food Allergies

25 Facts About Food Allergies
By
Misha Gajewski, Stacker News
On 1/30/21 at 11:00 AM EST
Unsplash
In scientific terms, an allergic reaction occurs when the body s immune system overreacts to a normally harmless substance, such as peanuts or cat dander. White blood cells that defend our body from foreign invaders go into overdrive when they encounter a type of antibody known as Immunoglobulin E (IgE). The result is an extreme inflammatory response that might include difficulty breathing, vomiting, itchy eyes or ears, or a rash. If the allergic reaction is severe enough, a person can go into what s called anaphylaxis, where the allergic reaction happens in a matter of seconds or minutes. When this happens, the immune system floods a body with chemicals that cause blood pressure to drop and airways to close up. In other words, your body goes into shock that can result in death if the symptoms aren t treated immediately. ....

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50 Ways Air Travel Has Changed Over the Last 100 Years

50 Ways Air Travel Has Changed Over the Last 100 Years
By
Joni Sweet, Stacker News
On 1/8/21 at 10:00 PM EST
When s the last time you got on a plane? If your last flight was before the pandemic, you re not alone. Industry statistics show worldwide air travel is down by more than 85% from 2019, according to the Associated Press in August 2020. Fears about catching COVID-19 in a crowded airport combined with regional lockdowns, border closures, and stay-at-home orders made many people think twice before hopping on a flight in 2020. Those who did travel by air during the pandemic were met with a significantly different experience. Airlines implemented mask requirements, swapped in-flight meals for prepackaged snacks, halted certain routes, and even blocked off middle seats to try to create a socially distanced experience at 35,000 feet. ....

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