Healthy retirement
Learning Center
Hyperinflated lungs: What does it mean?
If you can’t breathe out well, as in COPD, air may get trapped inside your lungs. As you breathe in more air over time, your lungs get too big and stiff.
Ozone air purifiers: Can they improve asthma symptoms?
Ozone air purifiers don't reduce asthma symptoms. In fact, they can make asthma worse.
Warm-mist versus cool-mist humidifier: Which is better for a cold?
Warm-mist and cool-mist humidifiers are equally effective in humidifying the air.
Influenza (flu)
Learn more about the symptoms, causes and prevention of this potentially fatal viral infection that attacks the respiratory system.
Pseudobulbar affect
Pseudobulbar affect — Overview covers symptoms, treatment of this neurological condition that's characterized by uncontrollable laughing and crying.
MCAD deficiency
This inherited genetic disorder prevents the breakdown of certain fats needed for energy, leading to dangerously low blood sugar levels if not treated.
Craniopharyngioma
Learn more about this noncancerous tumor that forms near the brain's pituitary gland, including diagnosis and treatment options.
Pneumonia
Pneumonia — Learn about the symptoms, causes and treatment of this serious lung infection.
Cardiac resynchronization therapy
This heart failure treatment uses a pacemaker or a pacemaker with a defibrillator. Know when the treatment is needed.
Holter monitor
This wearable device keeps track of the heart's rhythm during daily activities. Learn when you might need one and what to expect.
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