Insomnia and coffee

Adam Zapel
4 min readOct 22, 2021

In this article we will try to understand how coffee consumption, both decaffeinated and other foods, can make us have difficulty sleeping and poor sleep and think we are suffering from insomnia by mistake. This is true at younger ages, but especially at older ages as you will understand from reading below.

Many of those who consume coffee or miracle coffee, lose over the years the sensitivity to the effect of coffee and naively believe that it has no effect on their sleep and continue to consume it because of taste or habit. But in practice, the effect of one cup of coffee lasts for long hours.

The time to leave the body of 50 percent of the amount of caffeine in the coffee absorbed by the body is 5–7 hours! That is, even if you drank a miracle coffee or coffee at five in the afternoon, its effect on the body lasts until midnight. Only at midnight will the body get rid of 50 percent of the substance, and what about the remaining 50 percent? It will also take them a while to finally leave the body. So, in fact, it takes a very long time for the effect of a single cup of coffee to disappear.

There is nothing like personal testimony in this matter, so I will share that I myself used to drink between 3–4 cups of Ness Coffee a day, the last of which was 11pm at night. In those days I had no problem getting a deep sleep even half an hour later, but today after a few years of not consuming coffee or a miracle coffee almost at all, there were more than two occasions where I wanted to indulge in memory of the good old days and drank one single cup of coffee at 19:00 In the evening, not later, because I innocently thought there would be no harm in it, and then I just could not close my eyes all night! So the coffee is stimulating and more how, and since even if I drink coffee, it will be no later than 14:00 noon.

There are two factors that determine the waking and sleeping times.

The first is the circadian rhythm. The second is sleep stress which produces a substance called adenosine. The concentration of adenosine gradually increases in the brain, the longer we are awake. Sleep stress leads to a growing desire to sleep. This usually happens after between 12–16 hours of wakefulness.

When you drink a caffeinated beverage, it makes you feel awake even when you are tired and want to sleep. It does this by blocking the same adenosine receptors and thereby blocking the signal that adenosine transmits to the brain. The result is that we feel alert and alert despite the high adenosine concentrations. But as soon as the liver finishes breaking down the caffeine, the drowsiness we did not feel, it will suddenly take over us in full force, and we will want to sleep.

Caffeine is found in a variety of beverages: coffee, miracle coffee, teas of all kinds, energy drinks, chocolate of all kinds, and certain medications.

By the way, even in products that boast of being decaffeinated this is not accurate. Decaffeinated coffee contains between 15–30 percent caffeine than coffee containing caffeine. This means that if you drink 3 cups of this coffee or tea, you will reach the caffeine concentration in a single cup of coffee. By the way, as we get older, it takes longer for the body to clear the caffeine from the body.

If you are used for years to open and end your day with a cup of coffee, you will have a hard time abandoning this habit, I can share mine personally it was very difficult, but after reading quite a bit of material about the harmful effects of coffee, I decided to put an end to it.

If you still have to, because what can you do without it, then you should do as I usually do, consider drinking the last cup of coffee no later than 14:00 noon. This is to allow the body to break down the caffeine and get to sleep at night with less caffeine in the body.

At the same time, the consumption of chocolate and other products that contain caffeine should also be stopped until the early afternoon. Try this for a few nights and realize the blessed effect that decaffeinated evenings will have on your sleep.