[scotty79]

Yup. I, on the other hand, on 3 cups daily felt like a zombie. Then I quit cold turkey and after a week I felt better that any time in the previous months.

When I occasionally forget myself and ingest more than minimal dose of caffeine (one strong coffee is sufficient) I get dizzy, my sleep patterns immediately go out of whack and if I keep ingesting caffeine I get face muscle twiches and a sense that something very bad happens and I'm gonna probably die soon.

Meanwhile I love coffee and I drink up to six cups of decaf a day.

I also love earl gray tea but I have to indulge occasionally, and cheap energetics, but I have to dose them by half a glass and even that also only occasionally.

[gumboshoes]

Decaf still has enough caffeine left in it that it affects me. So interesting how differently bodies react to different amounts. I can't even have some kinds of chocolate.

[atombender]

Depends on the brand. The modern Swiss Water process (which is what most high-end espresso brands use nowadays, since it's cheaper and doesn't rely on chemicals) uses osmosis to remove 99.9% of the caffeine from the coffee bean.

[scotty79]

Wow. That's extreme. Decaf supposedly has way less than 1/20 of the caffeine of regular coffee. Maybe you are sensitive to other substances that coffee contains on top of your sensitivity to caffeine?

Things we ingest have many weird organic substances which we don't pay much attention to because they don't noticeably harm nearly all people. But there's no guarantee they will not somewhat harm anybody.

Nothing we eat or drink was perfectly designed for human consumption. We just kind of get away with it.