7 Side Effects of Excessive Black Coffee Consumption.

Digestive Issues, Can lead to stomach upset and acid reflux.

Insomnia, Excessive black coffee can disrupt sleep patterns.

Nutrient Absorption, May hinder the absorption of certain minerals like calcium and iron.

Dehydration, Acts as a diuretic, increasing urine output and risk of dehydration.

Anxiety, High caffeine intake can increase anxiety levels.

Dependence, Regular consumption can lead to caffeine addiction.

Increased Heart Rate, High caffeine can cause rapid heartbeat.