Short Term Effects of Diet on Cognitive Performance
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Transcript of Short Term Effects of Diet on Cognitive Performance
Short Term Effects of Diet Short Term Effects of Diet on Cognitive Performanceon Cognitive Performance
Steele TaylorSteele [email protected]@uvm.edu
www.uvm.edu/~jstaylor/AcademicExcellencewww.uvm.edu/~jstaylor/AcademicExcellence
Giuseppe Arcimboldo, Summer, 1573, Louvre
Museum, Paris
The Institute of Medicine:
Committee on Military Nutrition Research
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The Brain: “Selfish and Snobbish”The Brain: “Selfish and Snobbish”
≈2% of Overall Body Mass
20-25 % of Resting Energy Expenditure
Pure Reliance on Glucose (normally)
Negligible Energy Reserves
No weight loss during starvation
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Memory Storage and Retrieval
Navigation of Outer and Inner Space
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Hippocampus: “Librarian of the Brain”
Baseline glucose supply may not Baseline glucose supply may not keep up with the demands of highly keep up with the demands of highly
active areas of the brain… active areas of the brain…
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Glucose Tolerance and Glucose Tolerance and Glycemic IndicesGlycemic Indices
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Be Careful – Glycemic Index ≠ ΔBlood Glucose…
1. Individual Variations
2. Overall Composition of Meal
3. Food Preparation
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Depending on the length of the Depending on the length of the task, you can get away with a task, you can get away with a
higher glycemic-index mealhigher glycemic-index meal……
Benton et al. .The delivery rate of dietary carbohydrates affects cognitive performance in both rats and humans. Psychopharmacology (Berl). 2003 Feb;166(1):86-90. Epub 2002 Dec 12.
The Post-Lunch DipThe Post-Lunch Dip
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“Neither Hungry Nor Full”
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Reward YourselfReward Yourself
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The Precursor Control Hypothesis: h
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The Diffuse Serotonin System:
1. Moderate Exercise
2. High carbohydrate vs. protein meal
30 Hours of Energy!
Caffeine: Caffeine: Multiple sites of action to generate Multiple sites of action to generate
CNS stimulation and alter metabolismCNS stimulation and alter metabolism TaurineTaurine
Protects electrically excitable tissuesProtects electrically excitable tissues Prevents central and local fatiguePrevents central and local fatigue
CDP-CholineCDP-Choline Precursor control of acetylcholinePrecursor control of acetylcholine
N-Acetyl L-TyrosineN-Acetyl L-Tyrosine Precursor control of dopamine and Precursor control of dopamine and
norepinephrinenorepinephrine L-Phenylalanine L-Phenylalanine →→
phenethylaminephenethylamine Operates like a weak amphetamine to Operates like a weak amphetamine to
sustain the activity of dopamine and sustain the activity of dopamine and norepinephrine norepinephrine
Short Term Effects of Diet Short Term Effects of Diet on Cognitive Performanceon Cognitive Performance
Steele TaylorSteele [email protected]@uvm.edu
www.uvm.edu/~jstaylor/AcademicExcellencewww.uvm.edu/~jstaylor/AcademicExcellence
Giuseppe Arcimboldo, Summer, 1573, Louvre
Museum, Paris