What are common symptoms of caffeine intoxication?

The symptoms of caffeine intoxication primarily stem from its stimulant effects on the central nervous system and cardiovascular system. Restlessness, muscle twitching, and arrhythmias are well-documented signs that occur when an individual consumes excessive amounts of caffeine.

Restlessness can manifest as an inability to relax or sit still, often accompanied by a heightened sense of alertness. Muscle twitching is due to overstimulation of the nervous system, which may lead to involuntary muscle contractions. Arrhythmias, or irregular heartbeats, can occur as caffeine affects heart rate and rhythm, potentially leading to more serious cardiovascular concerns in extreme cases.

These symptoms differentiate caffeine intoxication from other health issues or conditions that might present different sets of symptoms. For example, fatigue and weight loss might suggest a lack of energy intake or underlying health problems, while headache and lethargy often indicate withdrawal symptoms or other conditions unrelated to excess caffeine consumption. Similarly, depression and slow metabolism are not typically associated with caffeine use but rather indicate different mental health or metabolic disorders.