Spirometry is a lung function test that measures how much air you can inhale and exhale, and how quickly you can do it.

Wear loose clothing, avoid heavy meals or intense exercise before the test, and follow any specific instructions from your doctor.

No, spirometry is non-invasive and painless. You will be asked to breathe into a device, which may feel slightly uncomfortable but is not painful.

The test itself takes about 15-30 minutes. Results are usually available immediately or within a few hours.

The frequency depends on your health conditions and doctor’s recommendations. It may be performed regularly for ongoing monitoring or as needed for diagnosis.

Common reasons include chronic sinusitis, nasal polyps, blocked sinus passages, and recurrent sinus infections that do not respond to other treatments.

Symptoms may include fatigue, weakness, shortness of breath, irritability, and tongue changes.

Treatment involves folic acid supplementation through oral tablets or injections, depending on the severity of the deficiency.

Yes, diets low in leafy greens, fruits, and fortified cereals may lead to folic acid deficiency.

Frequency depends on individual risk factors and health conditions. Consult your healthcare provider for personalized advice.

The test involves a simple blood draw with minimal risks, such as slight bruising at the puncture site.