Allergies must be familiar to everyone, common such as pollen allergy, drug allergy, rare such as water allergy, cold allergy, but have you heard of sports allergy?
You may think that “exercise allergy” does not mean “lazy”? But for some, it’s a real pain.
An allergist once saw a patient who, after drinking a few drinks the night before and ibuprofen the morning before, developed the dreaded anaphylactic shock while out for a run. However, the patient had never been allergic to alcohol or ibuprofen before, so the doctor speculated that the patient was probably allergic to exercise.
We know, the occurrence of allergy is conditional, need a trigger allergic reaction material (that is, we say the allergic source), such as pollen, drugs, or cat hair, after these substances on the human body, can induce immune active substances (for example, antibodies) produced in great quantities, prompting immune cells release histamine and other chemicals, Causes sneezing, hives, wheezing and a series of symptoms. Exercise does not involve the entry of allergens into the body, from this point of view, people can not be allergic to exercise.
However, exercise can sometimes directly induce the immune system to produce physiological processes similar to allergic reactions. Although no antigen is involved, it still activates immune cells and releases histamine. This rare process is known as exercise-induced anaphylaxis.
There are two main types of exercise allergies. One is an allergic reaction triggered by exercise alone. The pathogenesis of exercise is unclear, but one theory is that endorphins released during exercise cause allergic reactions.
Another type of exercise allergy is not completely caused by exercise, but other factors work together with exercise to cause the allergy. One of the most common is food-dependent exercise-induced anaphylaxis, in which eating a certain food before exercise can cause an allergy, but eating it alone is perfectly fine.
In the previous case, it was likely that alcohol or ibuprofen (or even a combination of the two) had caused the allergic reaction to exercise.
There is no clear answer as to why certain foods combined with exercise cause allergic reactions. One idea is that exercise increases the permeability of the digestive tract, making the allergens more accessible to the immune system.
Exercise allergies are rare, with a study of such cases suggesting that about 2 percent of people experience an allergic reaction, and that only 5 to 15 percent of those cases are exercise-related. Food-dependent exercise allergies are even rarer, accounting for about a third of all exercise allergies.
Preventing food-dependent exercise allergies can be as simple as not eating for four hours before and after exercise. Of course, if you know which foods cause exercise allergies, just avoid them.
In contrast, exercise-induced allergies are more complicated and may require a doctor to develop a specific exercise program based on the patient’s condition. Different patients can tolerate varying levels of exercise, from walking to cycling.
In emergency situations (such as anaphylactic shock in the previous case), epinephrine may be used for first aid, while appropriate antihistamines may prevent the onset of illness.
For most patients, the disease does not develop to the point of shock, more likely to develop symptoms such as hives or asthma.
In addition, in all kinds of sports, swimming rarely causes sports allergy. Next time someone says they’re allergic to exercise, just take them swimming.