Yes. Many of our students have had breathing problems since childhood. According to K. P. Buteyko MD-PhD, the root cause of asthma is over-breathing or hyperventilation.Once a student has eliminated over-breathing with the Buteyko Breathing Method – no matter how long the student has had breathing problems, he or she will lose most or all of their symptoms. Many students become completely drug-free. Please read our testimonials and watch the video testimonials.