This is great info, Sheree. I used to have lots of seasonal allergies, as well as asthma. About 10 years ago, I started eating better and now I'm eating mostly organic food, plus growing my own greens and making green smoothies every day.
Over the years, I've really managed to build up my immune system to the point where I only very rarely get sick. By that I mean I might get a cold every couple years. Also over that time, my allergies have pretty much disappeared. I feel like a healthy immune system is the key to getting rid of allergies and the foods you mentioned, like the green tea and probiotics are all very good for boosting your immune system.
Also, some people are sensitive to food and ingredients like gluten, wheat, corn, soy, and other things that can cause allergic reactions too.