an apple because it has more nutrients in it
No, nut allergies and mushroom allergies are un-related. Nut allergies are closely related to tree nuts, however. Mushrooms are in the fungi family, so experiencing an allergy to mushrooms would be more closely related to molds/seasonal fungi. You should consult with your primary care physician or allergist and possibly get tested.
every drug can cause allergies
possibly
For a fantastic website related to anyone with food allergies, see related links below.
Sort of. Some people have allergies that may be exacerbated by honey, but most of the problems are related to the specific plants from which the honey was created. Allergies to honey are very rare. See related links for information about a study of honey-related allergies.
This depends on the type of allergies and the type of cancer, but usually not. Ask a doctor about it, anyway.
While food allergies involve the immune system, food intolerance is not related to the immune system.
Skin allergies or eczema and wheezing or asthma are closely connected. Food allergies are also part of the atopic picture.
Not necessarily. The healthiness of a fruit is not related to its density.
It's doubtful. Runny noses can be caused by many things (allergies, a cold, the flu, etc). Prostate cancer is generally not related to them, and having one does not mean you'll get the other.
If you are looking for someone to come and clean out your air ducts to help reduce your allergies, there are many companies that offer such services such as Lowes.
With allergies, the body recognizes the substance as foreign and attacks it much in the same way the immune system attacks a virus. So, in your case, your body thinks nuts shouldn't be in your system and tries to rid of them.