DRVs
- Created by: Vicky Johnston
- Created on: 26-04-15 15:41
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- DRVs
- What are DRVs?
- Provide guidance of adequate intake of each essential nutrient
- Average figures
- Not prescriptive
- DRVs for Macro and Micro nutrients
- Macro nutrients
- Based on population average figures
- Includes alcohol
- Micro nutrients
- COMA panel set requirements and DRVs for energy and 33 nutrients of known importance to human health
- Macro nutrients
- Using DRVs
- When looking at diets of the population aim to give the RNI.
- Surveys as such the National Diet and Nutrition survey assist in forming policies
- When looking at the diet of individuals:
- DRVs for guidance only
- Useful for prescribing diets or planning food supplies for large groups
- CAUTION
- The COMA panel emphasised that for most nutrients, there was insufficient data to set the EAR or LRNI or RNI (DRVs) or safe intake with any certainty
- Assumptions
- DRVs apply to healthy people only
- DRVs are set on the presumption that requirements for energy and all other nutrients are met
- DRVs vary for different groups of the population
- DRVs for pregnancy
- The EAR for pregnant women increases by 200kcal/day in the final trimester
- Breastfeeding mothers have increased requirements for energy
- Safe Intake Levels (SI)
- Provided for guidance
- Above risk of deficiency but below risk of toxicity
- Set for pantothenic acid, vitamins E and K, manganese, molybdenum, chromium, fluoride
- DRVs for energy
- In 2011 SACN changed BMI and PAL calculation levels
- What are DRVs?
- DRVs for energy
- In 2011 SACN changed BMI and PAL calculation levels
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