Wondering if you have a cold or a sinus infection? Doctors explain the key differences between them and treatment options for ...

The best ways to get rid of phlegm, from using nasal sprays to taking the right OTC medications. Plus, they explain what ...

Your respiratory system includes your nose, sinuses, throat, and lungs -- the parts of your body that help you breathe. If you have a weakened immune system due to HIV -- which can happen if you're ...

A respiratory tract infection affects the respiratory system, the part of your body responsible for breathing. These infections can affect your sinuses, throat, lungs, or airways. There are two types ...

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Respiration is the process by which energy is released from food in our body. The function of respiratory system is to breathe in oxygen for respiration producing energy from food, and to breathe out ...