Dietary Reference Values Flashcards
what are nutritional requirements?
the amount of each nutrient needed to maintain health and reduce risk of diet related disease
Why can nutritional requirements vary between individuals?
-age
-sex
-weight
-physical activity levels
-state of health
-an individuals ability to absorb or utilise nutrients
who are responsible for estimation of UK nutrition requirements?
SACN
what are 4 different DRVS?
-EAR
-RNI
-LNRI
-Safe intake
What is EAR?
-estimated average requirement
-approx 50% people will require more and 50% will require less
-used for % energy of macronutrients
what is RNI?
-Reference nutrient intake
-Amount of nutrient that is enough to ensure the needs of nearly all groups are being met(most people will have lower requirements)
-used for reference amount for population groups and used for individual micronutrient recommendations
What is LRNI?
-lower reference nutrient intake
-the amount of nutrient that is enough for a small umber of people that have low requirements
-is only 2.5% of population- majority need more
-meausres nutritional inadequacy
what is safe intake?
-used when there is insufficient evidence/ data for EAR, RNI, LRNI
-level where there is no risk of deficiency and is below risk of excess effects
what are the EAR for energy from macronutrients according to COMA (1991)
-50% from carbohydrate
-35% from fat
-15% from protein
-(with alcohol- 47%, 33%, 15%)
what supplements are reccomended for certain population subgroups?
-Vitamin D supplemets- for pregnant and lactating women, people aged 65 and over, everyone in UK during winter months
-Vit A,C,D supplements are recommended for children under 5 years
what micronutrients are a concern for British Males as a large amount are below the LRNI?
-Vitamin A (age 11-64- around 19% are below LRNI)
-Magnesium (11-18- around 27% are below)
what micronutrients are a concern for British females as a large amount are below the LRNI?
-riboflavin- (age11-18, around 26% are below)
-viatmin A (age 11-18-around 24% are below0
-Iron
-Calcium
-Magnesium
Describe RDV of energy for males and females as age increases?
-age 1 starts at around 700
-age 2-3-increases to around 1000
-age 4-6-increases to 1500 (boys ) and 1400 (girls)
-age 7-10-increases to 1800 and 1700
-ages 11-64 increases to 2500 and 2000
-ages 65-74 decreases by around 100
-ages 75+ decreases to 2300 and 1840 (by another 100)
macronutrient RDVS for general population(11-64)
protein-M-55g, F- 45g
fat-M-97g, F-78g
carbohydrate-333g, F-267g
Free sugars- M-33g, F-27g
Salt- M-6g, F-6g
Fibre-30g a day
Vitamins RDV’s for general population (11-64)
Vit A-M- 700ug,F-600ug
Thiamin-M-1mg, F-0.8mg
Riboflavin-M-1.3mg, F-1.1mg
Niacin-M-16.5mg, F-13.2mg
Vitamin B6-M-1.5mg, F-1.2mg
Vitamin b12-M-1.5ug, F- 1.5ug
Folate-200ug, F-200ug
Vitamin C-MF-40mg,
Vitamin D- MF-10ug,
