I was going to start a thread on this very issue. I've been riding pretty consistently over the past few months, making sure I fuel up before the ride and eating something after the ride. Maybe even forcing myself to eat since I knew I had to ride. But I've noticed the past few weeks I have had no desire to eat anything, whether I rode or not. Just not hungry. And with the mileage I've been doing it has started to worry me. Been doing 80-100 miles a week. I should be hungry, you know what I mean?

Don't feel like cooking. Don't want to eat. I'm not depressed. I have been very busy, and things have been stressful. So, I've wondered, do I make myself eat? Do I wait to eat until I get hungry? I've been off the bike for 4 days now due to busyness. And during this time I've been eating junk just so my energy level will increase, hoping too it would stimulate my appetite. I talked with another friend of mine who is a cyclist and is also having the same problem. What gives???? By the way, the junk food thing doesn't work.

Overtraining?
Seasonal weather changes?
Low blood sugar?