While people can have adverse reactions, particularly allergies, to natural foods, there are several additives that have been identified that tend to cause problems.

同时，人民可以有不良反应，尤其是过敏，天然食品，有几种添加剂已确定，往往会造成很多问题。

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Food allergies, particularly allergies to peanuts and tree nuts, were a growing problem with no known cause, and they now affected 3-6 percent of children under the age of three.

成因仍然成谜的食物过敏，尤其是花生和坚果过敏，已成为日益严重的问题。3 - 6%的三岁以下儿童患有食物过敏症。

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Nickel allergies are particularly difficult to diagnose and tolerate because nickel has permeated so many aspects of our lives.

镍已经渗入我们生活的方方面面，镍过敏绝对就是一个悲剧。

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Developed by Hannes Harms, a design engineering student at the Royal College of Art in London, these little markers would allow consumers to trace the entire supply chain behind every item in their cupboard, while feeding valuable nutritional information to dieters or people with particularly dangerous food allergies.

ENGADGET: NutriSmart prototype embeds RFID tags directly within food, traces your lunch from start to finish (video)

Other studies presented at the same conference contradicted the findings of the Basel team - reporting rising levels of allergies and asthma, particularly in northern and eastern Europe.

BBC: Childhood asthma starting to fall

These messages can be particularly valuable if you have life-threatening food allergies.

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