Excessive caffeine consumption can lead to various health issues, including anxiety, insomnia, and digestive problems. High intake can increase heart rate and blood pressure, potentially causing cardiovascular complications for some individuals. Dependence on caffeine can disrupt normal sleep patterns, leading to chronic fatigue. Additionally, excessive caffeine may lead to withdrawal symptoms such as headaches and irritability when not consumed. Moderating intake to levels that align with individual tolerance is crucial for maintaining a healthy balance and overall well-being.