Asthma is widely known to be a condition that affects millions of people in the world as it causes a person to develop an inflammation in their lungs' airways. However, experts say that as asthma patients take certain treatments, they should know as well that certain foods should be avoided in order to lower their asthma attacks.

According to Healthline, a study published in the "American Journal of Respiratory and Critical Care Medicine" showed that asthma patients increase their attack frequency upon shifting into healthy fruits and vegetable diet into processed foods. Yet, it is stated that no evidence have yet been found regarding a food that improves asthma symptoms on its own.

However, some asthma patients were said to avoid foods that include a certain type of preservative called Sulfites in order to lower their attack frequency. Sulfites were identified to be found in wine, dried fruits, pickled food, maraschino cherries, shrimp, and bottled lemon. Chemical preservatives, flavorings, coloring and other artificial ingredients were also said to be avoided since some are sensitive to it.

Aside from that, beans, cabbage, and onions were also identified to cause gas so asthma patients should avoid it as well. Some asthma patients were also believed to be sensitive to salicylates found in coffee and tea too. However, it was noted that asthma patients should consult their doctors first before avoiding foods.

Meanwhile, Star 2 reported that researchers from the French National Institute of Health and Medical Research, Inserm found out that asthma patients could increase their symptoms when they eat smoked meat or cured sausage at least four times a week.

The study published in the journal Thorax also stated that eating fiber could do the opposite. It was also mentioned by a pediatric pulmonologist at Clinique Marcel Sembat in Boulogne-Billancourt France, Dr. Bertrand Delaisi that consuming a diet rich in fruit, vegetables, and vitamin C could limit the risks of asthma for patients.

Nonetheless, foods rich in omega-3 fatty acids present in oily fish, walnuts, and canola oil were also identified to lower the risk as well as in those patients already suffering asthma. The antioxidant flavonoid called quercetin, which is found in onions, mustard oil, tea, and apples was also described to frequent asthma attacks from occurring since it inhibits inflammatory substances.