What's something that you do all day, every day? Breathing! Your lungs are large and in charge of breathing, so read all about them in our article for kids.

Air enters and leaves the lungs via a conduit of cartilaginous passageways — the bronchi and bronchioles. In this image, lung tissue has been dissected away ...

Researchers discovered that young women with PCOS do not breathe as well as other women. Decreased lung function is a basic biomarker of aging. It's disturbing that these women were only 21 years old! They should be at the prime of life. No one should have impaired lung function at this age. Insulin resistance may play a role in this problem.