Two months ago I knew I wasn't feeling quite right and went to my doc. After a discussion, he tested my blood sugar and found that I had become slightly type II diabetic. Posting my health issues here is not my intent, rather, it is to inform and possibly help others overcome that nagging arm pump syndrome. Anyway, I went on a diet of avoiding all foods with refined sugar content as much as humanly possible. Actually, I became a fanatic about avoiding sugar. Today I went riding for the first time since the end of July and experienced NO ARM PUMP....zero...zlich. Before I cut out the sugar, my arm pump was so bad that I couldn't ride more than 5 minutes straight without debilitating arm pump and I couldn't do better than last place and was lucky not to get lapped in a 4 lap race. I'm passing on my experience to others who might suffer from terrible arm pump and are looking for an avenue to curtail it. Cutting out sugar might be the key as well. Another positive aspect of avoiding sugar is that I slowly shed 12 pounds of fat and now my weight is a svelte 172 with tons of energy. It actually feels like I just knocked 15 years off my age(47). Who woulda thunk it?