For many of us freshly brewed coffee is as much a part of our morning routine as brushing our teeth. Some even claim to be incapable of anything before the first coffee. In addition to its desired effect, the active ingredient in coffee, caffeine, however, also has other effects that can influence sleep.
What is caffeine?
Caffeine is a pharmacologically active substance. This means that when caffeine is ingested, there are verifiable effects in the body. Caffeine is one of the oldest, most effective, best tolerated and most commonly consumed active ingredients. It occurs naturally in coffee beans, tea leaves and cocoa beans. It is a component of many stimulants in our diet.
Caffeine content of selected stimulants:
How does caffeine work?
The probably best-known effect is the reduction of fatigue and daytime sleepiness. It also has an activating effect on the central nervous system and thus increases heart rate and blood pressure.
It has a slight diuretic effect and promotes digestion. It also increases concentration and has a positive effect on drive and mood. At higher doses, it even expands the bronchial tubes. Caffeine ingested during the day also has an effect on night sleep, it suppresses deep sleep. It is possible to develop tolerance. This tolerance develops after about 6-15 days of heavy caffeine consumption.
Side effects include deposit symptoms such as headaches and nausea. In addition, the intake of large quantities can lead to stomach problems. The lethal dose for humans is about 10 grams of caffeine.