1. Dependence and Withdrawal
If you drink coffee every day, your body adapts to caffeine.
When you suddenly stop, you may experience:
- Headaches
- Fatigue
- Irritability
- Difficulty concentrating
While this isn’t considered a true addiction, it is a real physical dependence.
2. Sleep Disruption
Caffeine has a half-life of about 5–6 hours.
That means if you drink coffee at 8 a.m., about 25% of the caffeine may still be in your system by 8 p.m.
Even if you fall asleep easily, caffeine can:
- Reduce deep sleep quality
- Make sleep less restorative
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3. Anxiety and Jitters
Consuming too much caffeine—typically more than 400 mg per day (about four cups)—can lead to:
