Do food allergies lower your immune system?

what do we know about food allergies lowering a persons immune system? I am 50 yr old white female. Thru RAST testing years ago, I learned that I am allergic to wheat, corn, peanuts, peas, bananas and melons. I managed to eliminate these foods for 2 weeks before fell off wagon. This was back in 80's. Was very clear headed and had lots of energy.Stupidly didn't stick with it.  Now that I have dx chronic fungal rhinitis (by 2 ENTs) and read that a lowered immune system can cause this, I wonder if bombarding myself with these foods and airborne allergens is my body's response. My asthma has worsened considerably in last year,otherwise I am healthy. . Had 3 sinus surgeries, last one in Dec.08.  Problem back just as bad. Is ther a way to increase my immune system myself or thru medicine so that I can fight this thing? I have children to raise. I am...trying to keep my spirits up.

[ChitChatNine]

I'm not a Dr., but my thought is that it challenges the immune system if the allergies are not well maintained.  Once my dd's allergies were well under control, so was her asthma.  Be careful with otc immune boosters ... many contain plant derivatives of ragweed but you wouldn't recognize it .. if you are allergic to ragweed it can make matters worse.

C~