That is an interesting point. I have been having pretty bad leg cramping on my last few rides, of let's say 35-40 miles, as opposed to what might happen previously on a hilly 55-65 mile ride. Somehow, I suspect many of the issues I am having are all related to my lack of absorption of calcium, and perhaps a Vitamin D and magnesium deficiency. I just can't believe that I have become "weaker" all of a sudden. I need to find a doctor or someone who can put all of this together. Well, the endo. will be first and then perhaps a nutritionist and an orthopedic doctor.
If I hadn't been tested for every disease known to mankind two years ago, I would suspect I have celiac or Crohn's, but everything came out negative.