Before college, my coffee consumption was minimal, but as a freshman obsessed with grades, I turned to coffee for late-night study sessions. Fast-forward to graduation, and I was a certified coffee addict, relying on a 16-ounce tumbler daily.
Attempts to cut back with half-caffeinated or decaf coffee were short-lived. Wondering why coffee seemed less effective, I consulted Anika Christ, a registered dietitian. She confirmed that caffeine tolerance is real, with the body becoming less responsive to its stimulating effects over time.
Christ highlighted signs of caffeine tolerance, including reduced energy boosts and headaches as the caffeine wears off. Withdrawal symptoms like lethargy and trouble focusing may indicate dependency.
Explaining how caffeine works, it functions as a central nervous system stimulant and adenosine receptor antagonist, fooling receptors and leading to increased alertness. However, prolonged caffeine use prompts the brain to produce more adenosine receptors, diminishing the impact of the same caffeine dose.
To avoid or address caffeine tolerance, Christ suggests varying intake rather than quitting abruptly. Gradual reduction, trying half-caffeinated options, and incorporating substitutes like tea may help. Importantly, maintaining a healthy lifestyle with proper nutrition, regular meals, and sufficient sleep is crucial to prevent energy decreases that may drive increased caffeine cravings.
Source: cnet.com
