The device called BreathSlim System primarily works by teaching breathing techniques that shed pounds. A 10- to 20-minute use of the device daily changes one's breathing pattern into one that will increase metabolism and fat burning.

The device comes with an instructional DVD.

Albert Shumoff, chief operating officer and global vice-president of BreathSlim, Inc., said his company discovered the correlation of breathing and weight loss in a study of asthma patients who used the device. Results of the study showed patients experienced appetite suppression and increased weight loss.

However, further research is needed to prove the findings.

The company added that a balanced diet and regular physical activity should still be practiced to make BreathSlim more effective.

Medicine Weight loss Asthma