Hi there! Funny you should mention this topic. I have been thinking about it so much lately. My sister just recommended an excellent book to me, "Caffeine Blues" by Stephen Cherniske.
Here is a link to it on amazon.com: http://www.amazon.com/exec/obidos/AS...711198-6902459
. You can read an excerpt from the book on their site.
Now, I have not read this book yet, but my sister reads choice tidbits to me daily. After her first "information session" I quit caffeine cold turkey, and have had none for several weeks. At first, I got headaches and I was sooo tired. And I did not even consider myself addicted -- 2-3 coffees per day.
The main reason that I wanted to quit is that my naturopath said that caffeine significantly affects fertility. And, that caffeine consumption suppresses your own body's production of cortisol (stress hormone) that gives you natural get-up-and-go in the morning.
Now, I have no problem being alert and highly functional all day long. But, that withdrawal was really tough!
Regular use of caffeine doesn't just affect cortisol production. It changes your body's chemistry, and alters your perception of what you think your body needs to be healthy and satisfied. It is scary to think that your own body wisdom can be undermined and that something that you drink could make you less reliable in your intuition than before.
Anyhow, after I read that book, I am sure that I will have lots more to say on the subject. For now, I am staying caffeine free for life.