How much coffee is too much coffee?

Although moderate coffee consumption can offer a range of health benefits, the limits of safe consumption are clearly outlined. How much coffee is "too much"?

Caffeine dosage and toxicity

Coffee, when consumed reasonably, protects the liver and brain, supports the intestines and heart, has anti-inflammatory effects, and prevents cancer and diabetes.

The recommended maximum caffeine dose for an adult is about 400 mg daily, roughly four cups of coffee (though the dose varies depending on the type of beans and the brewing method). Exceeding 400 mg daily can lead to symptoms associated with excess caffeine in the body.

It is estimated that the oral lethal dose of caffeine is about 10 g, equivalent to consuming about 80 cups of espresso, drunk one after another.

Symptoms associated with excessive caffeine intake

Excessive caffeine consumption can lead to various symptoms that can disrupt daily functioning and pose a health threat.

1. Headaches and migraines

A sudden increase in caffeine consumption can dilate blood vessels in the brain. In the long run, regularly exceeding recommended doses can cause chronic headaches.

2. Heart palpitations

Caffeine stimulates the cardiovascular system, increasing heart rate and sometimes leading to irregular heart rhythms.

3. Irritability and anxiety

As a psychostimulant, caffeine can trigger or exacerbate feelings of anxiety and irritability, especially in people with a predisposition to anxiety disorders.

4. Sleep problems

Caffeine blocks the action of adenosine, a neurotransmitter responsible for promoting the feeling of sleepiness, which can lead to insomnia.

5. Chest pain

Increased stimulation can lead to feelings of pain or discomfort in the chest, especially in people with existing heart conditions.

6. Frequent urination

Caffeine has diuretic effects, thus it may lead to dehydration.