I tested a theory based on honey. I was told if I eat honey it may reduce my allergy to certain pollens that is if I eat local honey. It appeared to work and I didn't have hayfever quite as bad as last year. I am allergic to heather! walking through it triggers my asthma when it is in flower. So last year based on nearly every farmer growing at least one field of oil seed rape I tried using the oil from this plant and found to my amazement that I didn't have a problem. One year I could hardly walk my asthma was so bad and yes it started as soon as it the plants started to flower and ended when the flowers dropped off. Has anyone else experienced this?