Living smoke-free
Learning Center
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Coughing more after quitting smoking: What's the deal?
If you cough more than usual after you give up cigarettes, find out what it might mean and when to call the doctor.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
What is thirdhand smoke, and why is it a concern?
Tobacco smoke creates toxic residue that clings to walls, carpets, clothes and other surfaces.