There are more and more allergies to certain foods. Experts are certain, including adults who have never had problems since childhood. In principle, any food can trigger an allergic reaction. Children, in particular, often react to basic foods such as milk, eggs, wheat or nuts.
In adolescents and adults, allergies to foods of plant origin, such as fruits, vegetables or nuts, are increasing. Cross reactions also play an important role here. For example, if someone has a pollen allergy and then reacts to certain types of fruits and vegetables.
But any reaction to a food is not automatically an allergy. It can also simply be a temporary incompatibility. These also increase. Scientists have now discovered what is the reason. The rate of increase in food allergies excludes some causes. So, the assumption is that the increase can not be genetic. Genetics would not change so fast. It must therefore be related to environmental influences that modify our microbiome. These are the bacteria that live in our body.
Too much antibiotics and too little fiber
Scientists led by Cathryn Nagler of the University of Chicago showed in a study how the microbiome could be associated with food allergies. They found that the intestinal bacteria of healthy human babies in germ-free mice protected against an allergic reaction to cow's milk. These are certain intestinal bacteria; if they are not present, they are more likely to develop allergies.
Nagler also explains why the microbiome of our body is changing. This is mainly because of the fact that antibiotics are being abused and that we are eating less fiber with the diet than we should. "Even if you avoid antibiotics personally, they are fairly stable as medicines and are present in more food and in our water supply than you would like to know," says Nagler of "Vice". "The loss of dietary fiber has been observed fairly regularly and Americans are famous for their fast foods or their low-fiber processed foods."
This condition is problematic because some bacteria feed on fiber. By eating less of them, the bacterial population of the intestine can change accordingly. Some bacteria die of hunger and promote the growth of others.
Research is still in its infancy. Until then: one must maintain one's microbiome in the intestine. Find out what are the appropriate foods here.