Difference between revisions of "Risks and benefits related to consumption of vegetables"

From Testiwiki
Jump to: navigation, search
m
 
(8 intermediate revisions by 3 users not shown)
Line 1: Line 1:
−
==Scope==
+
{{assessment}}
  
−
===Purpose===
+
[[Category:Risk assessments]]
 +
[[Category:Needs editing]]
 +
[[Category:Assessments]]
  
−
* To perform a preliminary benefit-risk analysis for vegetables in diet. A special focus will be
+
== Scope ==
−
on alternative sources of nutrients, such as supplements and food fortification.
 
−
* To perform an updated benefit-risk analysis based on the preliminary analysis, the new
 
−
intake data from several countries, and the redefined scope based on discussions among
 
−
Beneris researchers.
 
  
−
Deliverables
+
To perform a benefit-risk assessment in order to find out what would be the effects of additional vitamins, either in form of fortified foods or vitamin supplements, to children having a low vegetable diet (low vegetable diet assumed to be a junk-food rich diet).
−
*D40 Full benefit-risk analysis: vegetables (month 34)
 
  
−
Milestones and expected result
+
 
−
*A summary table of the most important risks and benefits of vegetables vs. supplements and food fortification. (month 18)
+
== Definition ==
  
 
===Boundaries===
 
===Boundaries===
  
−
The focus will be on vegetables. We will refine the scope and focus on some particular issues in the
+
*target age group: children 6 years
−
group of vegetables, and possibly on some particular age groups. We will explore alternatives to
+
*countries: Finland, Ireland, Denmark, and Spain
−
those vegetables as sources of nutrients. This includes supplements and fortified foods.
+
*vitamins: A (beta-carotene), B6, C, D
 +
expected/considered effects/impacts:
 +
**vitamin D overdose
 +
**vitamin A, B6, C, D deficiency
 +
**effects of sugar and fat in diet
 +
**life-long impacts: obesity, CVD, type 2 diabetes
  
−
In general, there is convincing evidence showing that vegetables in diet are a healthy source of many vitamins and fibre, although there are some particular issues of concern such as aflatoxins in nuts or nitrates in beetroot. On the other hand, many people do not consume vegetables enough according to recommendations, and consequently the intake of vitamins and other micronutrients may be too small. Vegetable consumption is an important issue especially at young age, when the dietary habits are developing. Vitamin supplements or fortification of foods can be used to increase micronutrient intake, if vegetable intake is low. However, then there is a possibility of overdosing some vitamins without ensuring a proper intake of all necessary nutrients. This situation raises interesting risk-benefit questions. How much can vegetables be replaced by fortified foods without causing more harm than good? What is the additional benefit of eating vegetables, when some of the nutrients can be obtained from other sources?
+
Time limits for case (agreed milestones/deliverables):
 +
*A summary table of the most important risks and benefits of vegetables vs. supplements and food fortification promised on month 18 (could this be replaced with the case research plan including  the rationale behind scoping etc.?)
 +
*Final product (D40 Full benefit-risk analysis: vegetables) ready by month 34
  
−
The objective of the second case study is to review and evaluate risks and benefits related to the consumption of vegetables, especially compared with fortified alternatives. Only the basic scoping of this case study has been done at this stage. Vegetables as a food group is so large that the work must focus on some particular aspects of vegetables, and possibly to some particular age groups such as children. The purpose is to start with the first case study (fish), and only later refine the scope and start the work on the second one (vegetables). In this way it is possible to fully utilise the methodological development during the first phase in this case study. The work will be performed in two phases. First, intakes, nutrient contents, and beneficial or harmful health effects of the selected food items or products will be evaluated based on scientific literature and own databases. Preliminary quantitative estimates of risks and benefits will be produced. Prioritisation on the most important effects and uncertainties will be done using value-of-information method and other techniques. Second, an updated benefit-risk analysis will be performed based on the preliminary analysis, the new intake data from several countries, and the redefined scope based on discussions among Beneris researchers. The scope of the updated analysis will be adjusted based on the knowledge obtained during the work, thus utilising the iterative approach that will be further developed in Beneris.
+
===Scenarios===
  
−
We will refine the scope and focus on some particular issues in the group of vegetables, and possibly on some particular age groups. We will explore alternatives to those vegetables as sources of nutrients. This includes supplements and fortified foods. We will derive intake distributions of the selected vegetables for Finland, Ireland, Denmark, and Spain. The work is based on existing databases. We will collect a summary table on the most important health risks and benefits of the selected vegetables and the alternative nutrient sources. This includes estimates of the exposure-response relationships. We will quantify the most important effects using published studies in humans and other information. The main uncertainties and further research needs will be identified.
+
# BAU (description current situation)
 +
# vitamin addition(s) of given amount(s) to children belonging to low vegetable diet category
  
−
===Scenarios===
+
===Intended users===
  
−
===Intended users===
+
possible target groups for using the information (prioritisation needed):
 +
*children's educators: school teachers, school health care personnel
 +
*public health care personnel
 +
*Parents of the children
 +
*decision-makers on vitamin supplement and food fortification regulations
 +
*food producers
 +
*vitamin supplement producers
  
 
===Participants===
 
===Participants===
  
−
Participants: KTL | TUDelft | FFiles | FSAI | DFVF | FVST | Lendac | FIN
 
  
−
Person-months per participant: 7| 0| 0| 1| 1| 0| 0| 2
+
Participating project members/person months:
 +
*KTL | 7
 +
*TUDelft | 0
 +
*FFiles | 0
 +
*FSAI | 1
 +
*DTU | 1
 +
*FVST | 0
 +
*Lendac | 0
 +
*FIN | 2
  
−
== Definition ==  
+
*case study will be carried out openly (will be carried out on open website: http://en.opasnet.org)
 +
*any participants among the identified potential user groups to be invited?
 +
*any participants among the target group (children of age 6) to be invited?
 +
 
 +
=== Data ===
  
 
=== Decision variables===
 
=== Decision variables===
 +
 +
*Vitamin addition to a child's diet, either
 +
**in form of fortified foods (food fortification?)
 +
**in form of vitamin supplements
  
 
===Indicators===
 
===Indicators===
Line 46: Line 72:
  
 
===Analyses===
 
===Analyses===
 +
 +
*Prioritisation on the most important effects and uncertainties will be done using value-of-information method and other techniques
 +
 +
=== Causality ===
 +
 +
 +
=== Unit ===
 +
 +
 +
=== Formula ===
 +
  
 
== Result ==
 
== Result ==
Line 52: Line 89:
  
 
===Conclusions===
 
===Conclusions===
 +
 +
==See also==
 +
  
 
==References==
 
==References==
 +
  
 
<references/>
 
<references/>

Latest revision as of 11:18, 13 March 2009

Scope

To perform a benefit-risk assessment in order to find out what would be the effects of additional vitamins, either in form of fortified foods or vitamin supplements, to children having a low vegetable diet (low vegetable diet assumed to be a junk-food rich diet).


Definition

Boundaries

  • target age group: children 6 years
  • countries: Finland, Ireland, Denmark, and Spain
  • vitamins: A (beta-carotene), B6, C, D

expected/considered effects/impacts:

    • vitamin D overdose
    • vitamin A, B6, C, D deficiency
    • effects of sugar and fat in diet
    • life-long impacts: obesity, CVD, type 2 diabetes

Time limits for case (agreed milestones/deliverables):

  • A summary table of the most important risks and benefits of vegetables vs. supplements and food fortification promised on month 18 (could this be replaced with the case research plan including the rationale behind scoping etc.?)
  • Final product (D40 Full benefit-risk analysis: vegetables) ready by month 34

Scenarios

  1. BAU (description current situation)
  2. vitamin addition(s) of given amount(s) to children belonging to low vegetable diet category

Intended users

possible target groups for using the information (prioritisation needed):

  • children's educators: school teachers, school health care personnel
  • public health care personnel
  • Parents of the children
  • decision-makers on vitamin supplement and food fortification regulations
  • food producers
  • vitamin supplement producers

Participants

Participating project members/person months:

  • KTL | 7
  • TUDelft | 0
  • FFiles | 0
  • FSAI | 1
  • DTU | 1
  • FVST | 0
  • Lendac | 0
  • FIN | 2
  • case study will be carried out openly (will be carried out on open website: http://en.opasnet.org)
  • any participants among the identified potential user groups to be invited?
  • any participants among the target group (children of age 6) to be invited?

Data

Decision variables

  • Vitamin addition to a child's diet, either
    • in form of fortified foods (food fortification?)
    • in form of vitamin supplements

Indicators

Other variables

Analyses

  • Prioritisation on the most important effects and uncertainties will be done using value-of-information method and other techniques

Causality

Unit

Formula

Result

Results of the analyses

Conclusions

See also

References

Retrieved from "http://www.opasnet.org/testiwiki/index.php?title=Risks_and_benefits_related_to_consumption_of_vegetables&oldid=8374"