Which of the following can be a trigger for asthma attacks?

Environmental pollutants are recognized as significant triggers for asthma attacks. They can exacerbate respiratory difficulties by causing inflammation in the airways and leading to increased sensitivity in individuals with asthma. Pollutants such as smoke, dust, mold, pollen, and industrial emissions can provoke bronchoconstriction – where the muscles around the airways tighten – making it harder for individuals to breathe.

In contrast, fresh fruits and regular exercise are generally considered beneficial for overall health and can even support respiratory function. Fresh fruits provide essential vitamins, antioxidants, and fiber, which help in reducing inflammation. Regular exercise, when performed in a controlled environment, can strengthen the respiratory system and improve lung function, although in certain conditions (like cold air exercise), it may need to be approached with caution in asthmatics. Hydration plays a critical role in maintaining overall health and can aid in mucus clearance, but it does not directly trigger asthma attacks.

Thus, understanding these factors can help individuals with asthma avoid potential triggers and manage their condition more effectively.