Increased Anxiety – High caffeine can overstimulate the nervous system. 

Insomnia – Disrupts sleep patterns, leading to poor rest. 

Digestive Issues – May cause acid reflux or stomach irritation. 

Addiction – Can lead to caffeine dependence and withdrawal symptoms. 

Increased Heart Rate – May cause palpitations or irregular heartbeat. 

Bone Health Risk – Excessive caffeine may reduce calcium absorption. 

Bone Health Risk – Excessive caffeine may reduce calcium absorption. 

Moderation is key to enjoying coffee without health risks.