When do the effects of coffee stop working?

When do the effects of coffee stop working?

Coffee is a widely loved drink. It not only refreshes the mind, but also has many other benefits. However, the effect of coffee on the human body is not infinite. It also has a critical point. After reaching this critical point, the effect of coffee will gradually weaken or even disappear. So, what factors determine when the effect of coffee stops? This article will explore this issue.

1. Caffeine Content

As a major ingredient in coffee, caffeine has the effects of refreshing the mind, increasing attention and alertness. However, not everyone is equally sensitive to caffeine. According to research, after consuming about 400 mg (roughly equivalent to 4 cups of regular black coffee), most people have reached their highest sensitivity and cannot further increase alertness or improve cognitive function.

In addition, after the intake of more than 400 mg of caffeine, some adverse reactions may occur, such as palpitations, insomnia, anxiety, etc. Therefore, it can be said that the effect of coffee stops after reaching a certain caffeine content.

2. Individual Differences

In addition to the caffeine content, individual differences are also an important factor in determining when the effects of coffee stop. Everyone has different levels of sensitivity and reaction to the ingredients in coffee and their effects. Some people may feel a significant refreshing effect with a small amount of coffee, while others need a higher dose to get the same degree of stimulation.

In addition, individual differences are also reflected in the body's metabolic rate. Some people have a faster metabolic rate and will excrete caffeine faster at the same dose, while others metabolize it more slowly and may feel a longer-lasting state of excitement at the same dose.

3. Drinking habits

Drinking habits are also a factor that affects when the effects of coffee stop. People who drink a lot of coffee for a long time may develop a tolerance to caffeine, which gradually weakens its effects. This is because the human body will adapt to the stimulation of caffeine, so higher doses are needed to get the same degree of effect.

In addition, the time and frequency of drinking will also affect when the effect of coffee stops. Studies have found that drinking coffee in the morning can improve alertness and concentration, while drinking it in the evening or before going to bed may cause adverse reactions such as insomnia and affect sleep quality.

4. Other influencing factors

In addition to the factors mentioned above, there are other factors that may also determine when the effect of coffee stops. For example, individual health status, age, drug interactions, etc. may have different degrees of impact on coffee.

In summary, the effect of coffee is not infinite, and it will stop or weaken after reaching a certain dose. This depends on many factors: including the content of caffeine, the main ingredient in coffee, individual differences, drinking habits and other influencing factors. Understanding these factors is very important for drinking coffee reasonably and giving full play to its effects.