Kwerk, dont' know if this has been pointed out to your, but you Lymphatic system isn't just in your armpits - it mirrors your circulatory system.
http://en.wikipedia.org/wiki/Lymphatic_system
By your logic we rally shouldn't use hairspray, toothpaste, soap, shaving gel, hair gel, shampoo, mouthwash or anything else we rub/apply/wash ourselves with.
Personally I think its more likely to do with the amount of Chemicals in our food.
I've just thought of something as well. As most Anti-persperants use an Aluminium oxide in their make up, perhaps you might also consider taking off your tin foil hat just in case....