We are what we eat?!

I've recently noticed my health improving, and I attribute it to the changes I made to my diet . Growing up I would eat fast food, drink soda, and eat candy whenever I wanted . Later in life, when I was in the military, I had a break from the junk food for extended periods of time . Now I try to eat those foods and I can not enjoy them . I taste the sugar more, the processed fast food makes me ill, and the candy isn't very important . So I made the decision to stop drinking soda (all of that corn syrup is a killer), and fast food I avoid like the plague . Over the span of a few months I noticed I was breathing easier and had more energy .

Has anyone else had their diet change for the better or worse ? Or have you experienced some side effects from eating only one type of food for too long ? I was just thinking about it today, in my opinion I can agree with the saying that we are what we eat .