Is caffeine addictive?
You can get used to caffeine. One cup of coffee is no longer enough to wake up. Heavy coffee drinkers can also experience mild withdrawal symptoms such as: headache, fatigue and irritability.
Healthy adults can consume about 400 milligrams of caffeine per day without expected negative effects. That is about 4 cups of coffee per day. Other advice applies to children, young people, pregnant women and women who are breast-feeding.
Voedingscentrum.nl: The advice to pregnant and breastfeeding women is not to take more than 2 cups of coffee or 1 cup of coffee in a day. For children under 13 it is recommended not to take coffee and for young people between 13 and 18 years a maximum of 1 cup. Instead of coffee with caffeine, you can also opt for decaffeinated coffee.