Coffee, a widely consumed beverage, has numerous effects on the human body, with its primary active ingredient, caffeine, known to influence cognitive performance, mood, and energy levels. This systematic review explores the complex interplay between coffee consumption, anxiety, and nutrition, analyzing evidence from both observational and interventional studies. We investigate the doseresponse relationship of caffeine intake and anxiety symptoms, the effect of coffee on nutrient absorption, and the potential role of coffee consumption in managing anxiety and improving overall nutritional status. Our findings suggest that moderate coffee consumption is generally safe and may provide some health benefits, while excessive intake can exacerbate anxiety and interfere with nutrient absorption. Personalized recommendations for coffee consumption, considering factors such as individual tolerance, pre-existing conditions, and dietary patterns, are crucial to optimize mental health and nutritional status. There's still a lot of research to be done to understand the underlying mechanisms and identify potential therapeutic uses for coffee.

Caffeine, Coffee consumption, Anxiety, Nutrient absorption, Mental health, Health benefits