Even the 9am ones? It's the only caffeine I take the rest is all decaf.
I'm a life long, heavy, heavy abuser of caffeine. I've researched extensively on the topic, and I've concluded that I've altered my brain from it, and I understand the theoretical (?) mechanisms involving brain chemistry and caffeine abuse. It falls under the same concepts of a heavy user of illegal stimulants.
In my case, I've never ever had a manic episode without some caffeine in my system. I've "quit" caffeine (coffee) over two dozen times for up to six months at a time without ever experiencing a manic episode, during those times.
However, no caffeine/coffee crushes me psychologically. I don't go through any withdrawal, but it messes up my brain chemistry. (No caffeine enhances my dysthymia, social anxiety, and fibromyalgia).
My well educated guess and current understanding is I'm experiencing a stimulant addiction readjustment within my brain. Some of my brain chemicals are (theoretically?) readjusting, including adenosine and dopamine. I've read it takes a year for the dopamine to readjust for heavy abusers of stimulants, and even then the dopamine production never goes back to normal.
All of my research into my experience lead to the discovery of someone else who had horrible psychological reactions to coffee. This individual published a book called "Welcome to the Dance". The moral is this woman was institutionalized and diagnosed with schizophrenia. I seem to remember she was locked up for a couple of decades. In any event, a new psychiatrist noticed how much coffee this woman was drinking within the institution, and he told the staff to completely cut her off all coffee. She fully recovered, went off her meds, was released from the institution; and, she lost her diagnosis of schizophrenia. Once released from the institution, she had to do 12 Steps to kick her coffee addiction.
I've got something similar going on, but for me it's bipolar tied into coffee; it triggers my mania. And, currently, I'm three months back on decaff after my last manic episode involving caffeine.
Sheri, if you can hack it, get off all coffee and see if you can resolve some or all of your issues. It might resolve your insomnia and your depression. Baby step if you have to. Maybe, mix in one shot of decaff along with one shot regular for your espresso, and work down from there.
I read that with Starbucks that its decaff has 1/15 the caffeine of regular coffee, and I sometimes react to decaff, as well. So, if I don't CTB soon, then ultimately I will try again to cut out decaff as well.