Hospitals can help with the symptoms of asthma and other allergies.
Some also help with weight loss.
But some, such as the Mayo Clinic in Rochester, Minn., have more options for people with a respiratory problem.
They have the Asthma Center, which offers a number of inhaler, nasal spray, and other treatments, as well as other services.
Mayo is a leading provider of the respiratory medications it offers.
The Asthma Centers at Johns Hopkins University and Columbia University are also part of the Johns Hopkins Health System, as are several other leading asthma care centers in the U.S.