Researchers at Indiana University in Bloomington found that the anti-inflammatory effects of fish oil supplements provided relief for asthmatics from airway restriction during exercise, also known as exercise-induced bronchoconstriction (EIB):

“The current findings suggest that fish oil supplements may be of value to asthmatics with EIB,” Mickleborough told Reuters Health. “Our results support previous reports suggesting that the benefits are mediated through the anti-inflammatory effects of fish oil.”

However, the dosage for this study was extremely high:

Mickleborough said the study subjects received 20 capsules of fish oil per day.

While this is an extremely large amount of fish oil, the researchers hope to find a lesser dose to be adequate in future studies. It should also be noted that one shouldn’t take this much fish oil in a day, unless it is ultra-refined, pharmaceutical-grade fish oil, for fear of poisoning by mercury and other toxins.

Source: Fish oil can prevent airway constriction in asthma