Breakfast cereal and caffeinated coffee: effects on working memory, attention, mood, and cardiovascular function

Area of Science:

• Cognitive Neuroscience
• Human Nutrition
• Psychopharmacology

Background:

• Breakfast and caffeine are common morning consumables with potential cognitive and physiological effects.
• Understanding their distinct impacts on cognitive functions and cardiovascular responses is crucial for daily performance optimization.

Purpose of the Study:

• To investigate the independent and combined effects of breakfast cereal and caffeinated coffee on working memory, attention, mood, and cardiovascular function.
• To differentiate the specific contributions of breakfast cereal versus no breakfast, and caffeinated versus decaffeinated coffee.

Main Methods:

• A controlled study involving 144 young adult volunteers (72 male, 72 female, mean age 21).
• Participants were assigned to four groups based on breakfast (cereal vs. no cereal) and caffeine (caffeinated vs. decaffeinated coffee) conditions.
• Cognitive tests, mood assessments, and cardiovascular measurements were conducted across three sessions throughout the morning.

Main Results:

• Breakfast cereal consumption was associated with improved mood, better spatial memory performance, and a greater sense of calmness.
• Caffeine intake did not affect initial mood or working memory but improved new information encoding and mitigated fatigue.
• Caffeine increased blood pressure and pulse rate; breakfast cereal consumption primarily affected pulse rate.

Conclusions:

• Breakfast cereal and caffeinated coffee exert distinct effects on cognitive function, mood, and cardiovascular parameters.
• These findings support previous research and highlight the specific benefits of early-morning cereal consumption and caffeine intake.