Breakfast and Cognitive Function Flashcards
How much energy in % do our brains use?
20%
How much more energy does a child use compared to an adult?
200-300% more
What micronutrient are required for key metabolic and control processes in brain development?
- Iron
- Zinc
- Iodine
- B-vitamins
What can iron deficiency throughout the life span cause?
- poorer memory at 9 months
- Delayed motor development by 10months
- Delayed cognitive processing by 10 years
- Altered recognition memory & executive function at 19years
- Poorer emotional health in mid 20s
Does iron supplementation affect IQ?
Yes - but only if anaemic or deficient
How did iron supplementation improve cognition in Rwanda study?
Improve cognitive performance - memory search and speed of retrieval in women (18-27 years)
what are the 2 domains that low iron intakes are associated with?
- Cognitive performance
- Work capacity
Who is most at risk for breakfast skipping?
Female adolescents (1 in 7 skip breakfast with an aim to restrict calorie intake)
What effect did the school feeding program have on children in Malawi?
- 1 sig effect = improvement in reversal learning (IED task)
Also, middle, upper arm circumference increased more compared to controls
Why may there have been a lack of effects in the Malawi school feeding program?
- Malawi gov did not pay for 25% of meals
- Mothers of children on program would give other children their home time food
what is test sensitivity?
the ability of a test to correctly identify those with the disease (true positive rate)
what is test specificity?
the ability of the test to correctly identify those without the disease (true negative rate).
What did the study “Effect of BF vs No BF on Corsi Block tapping task” find?
- performance was better following Breakfast.
- However, a significant condition*IQ interaction was also found
- for participants with lower IQs, the consumption of breakfast improved performance
- for higher IQ children - not difference
What are some issues with measuring breakfast in studies?
- Sample - e.g. including breakfast skippers (won’t be used to breakfast)
- hard to blind conditions
- ecological validity
What did Cooper et al (2001) find about breakfast?
Performance on day when they had breakfast didn’t decline as much as when they didn’t have breakfast = maintenance of performance