There is much debate as to whether or not there actually is global warming on the earth, and whether this is a man-made or a natural event. If the earth truly is warming, we might expect a "greenhouse" effect, causing the increased growth of plants as well as an increase in the pollination of these plants. We might also expect the pollinating seasons of these plants, such as spring and fall, to occur earlier in the year and to last longer. Three recent studies showed that pollen seasons are occurring earlier in the year, lasting longer, and resulting in more airborne pollen. Worsening of pollen allergies may be another effect of global warming that has yet to be fully recognized.

Read more:

• Pollen Allergies
• Why Allergies are Becoming More Common
• Can Allergies be Prevented?

With the close of the Winter Olympics, winter is unofficially over and spring allergies are upon us. In many parts of the country, especially the southern parts of the United States, trees are already pollinating heavily.

If you haven't already done so, your first step in planning your fight against spring allergies is to see an allergist. Your allergist can determine what allergies you have with allergy testing, and then formulate a treatment plan best suited to your needs. This may include allergen prevention, medications and the consideration of immunotherapy.

Share with us your plan on how to manage your allergies this spring:

Indoor allergens, such as pet dander, dust mites, and indoor mold are a major cause of allergy and asthma symptoms. People suffering from indoor allergies are typically exposed to these common indoor contaminants for long periods of time -- particularly at night when sleeping. When allergy testing shows the presence of allergies to indoor allergens, avoidance techniques are often tried first to reduce allergy symptoms from developing. This step may include using an air filter or air cleaner inside the home to reduce the amount of indoor airborne allergens that may cause or worsen allergy and asthma symptoms.

Learn more:

• Air Filters/Cleaners for Allergies
• Should You Get an Air Cleaner?
• Have You Received Benefits from an Air Cleaner? Share Your Story!

In February 2010, the Food and Drug Administration (FDA) provided an additional warning about asthma medications containing long-acting beta-agonists (LABAs), such as Advair and Symbicort. LABAs have been available in the United States since the mid-1990's as a controller therapy for the management of asthma. As a result of various studies showing a possible association of the use of LABAs and worsening asthma symptoms (including death from asthma), the FDA has recommended against the use of LABAs for the treatment of asthma unless absolutely necessary.

Read more:

• Is Advair Safe?
• How Advair Works
• Allergy and Asthma Medicines with Black Box Warnings