During the last 7-8 years I have had almost no sexual drive and my boners have been pathetically limp. I always assumed this was simply due to getting older but I recently went on vacation and started noticing morning wood that I haven't seen since I was 20.
This could be caused by the elimination of stress while on vacation but it could also be because of a change in diet. While at home I consume large amounts of soy products and since I went on vacation I am consuming considerably less. A quick Google search revealed that there may be a negative correlation between soy intake and erectile quality. However, I would be interested in the experiences of other male members on this forum.