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These studies suggest that drinking 400 mg of caffeine can enhance vigilance, energy expenditure, and mood without adverse effects for healthy adults, though it may cause a small increase in blood pressure and longer target scanning latencies in low coffee consumers.
20 papers analyzed
Caffeine is a widely consumed stimulant found in various beverages and foods. Understanding the effects of consuming 400 mg of caffeine is crucial for assessing its impact on health and performance. This synthesis reviews multiple research findings to provide a comprehensive overview of the effects of a 400 mg caffeine dose.
General Health and Safety:
Cognitive and Performance Effects:
Cardiovascular Effects:
Metabolic and Thermogenic Effects:
Behavioral and Subjective Effects:
Consuming 400 mg of caffeine generally does not pose significant health risks for healthy adults and can enhance cognitive performance and alertness. However, it may cause temporary increases in blood pressure and heart rate, and its effects can vary based on individual sensitivity and habitual consumption. While it can improve mood and concentration, higher doses may lead to anxiety in some people. Overall, moderate caffeine consumption can be part of a healthy diet for most individuals.
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