monitoring of food affordability and diet quality...problems •dietary risks are the number one...
TRANSCRIPT
MonitoringofFoodAffordabilityandDietQuality
AnnaHerforth,Ph.D.UCDavisWorldFoodCenter
June3,2017
Problems
• Dietaryrisksarethenumberoneriskfactorwithintheglobalburdenofdisease,andincludingwithin“developing”countries.
• By2020,itisestimatedthatnearly75%ofdeathsand60%ofDALYswillbeattributedtoNCDs,mostlyduetodietaryordiet-relatedcauses(Limetal.,2012).
• Itispossibleforeveryonetoeatenoughcalories,butimpossibleforeveryonetoeathealthydiets.
3
Source:KeatsandWiggins2014;2009datafromFAOSTAT
Affordability
Non-Stapleplants
FishandMeat
EnergySource FoodBudget
Staplefoods
Slide Source: Howdy Bouis; FNB 2011; rural Bangladesh
Topdietaryproblemsglobally
Source:GlobalBurdenofDiseaseStudy,GBD-comparetool
Foodenvironment
HerforthandAhmed,June2015.FoodSecurity
Theinterfacebetweenfoodsystemsanddiets,encompassingtherangeoffoodsavailable,affordable,convenient,anddesirabletopeople.
ANHAcademyFoodEnvironmentWorkingGroup,May2017
South Texas, USA. Washington Post 11/9/2013
Howrah, Calcutta - A Herforth
Roma Ostiense - A Herforth
CFSvision
Aworldfreefrommalnutritioninallitsforms,whereallpeopleatallstagesoflifeandatalltimeshave
accesstoadequatefoodandenjoydiversified,balancedandhealthydietsforanactiveandhealthylife.
Needstobereflectedinfoodmetrics
Measurethechangeyouwishtoseeintheworld.
-notGandhi
Existingmetricsareinadequate
Agriculture Food*Access
DietQuality Nutrition
*Nutritiousfoodtomeetdietaryneeds
Ag2NutCommunityofPractice&FAO
“FoodPrices”
• Usuallyreflecteitherstarchystaples,orabasketoffoodsmostoftenpurchased
• Doesnotmeanthepriceoffoodsthathumanbeingsneedtohaveadequatenutritionorthrive.
Needed:Foodpricesthatreflectnutritiousdiets
• Agricultureandfoodsystemscanmakenutritiousdietsmoreavailableandaffordable.
• But,governmentsandprojectshavenoinformationsystemthattrackspricesofnutritiousfoods.
• Countriescanuseexistingfoodpricemonitoringsystemsbettertounderstandavailabilityandpricesofnutritiousfoods.
• Internationalagenciescouldmonitortheseacrosscountries.
Indicators of Affordability of Nutritious Diets in Africa (IANDA)
� Tufts University, University of Ghana, Sokoine University (Tanzania), Johns Hopkins University
� Funded by an IMMANA grant (DFID)
� Goal: To use existing food price data systems to monitor the affordability of nutritious diets
MoFA in Ghana� Has a mandate to monitor and ensure food security
� Agreed: This mandate extends to nutritious food.� Tracks food prices regularly in 164 markets in all districts
� Missing: several important nutritious foods in Ghanaian diets
� Piloted an expanded food list� Decision: scale up nationwide, to enable tracking of
prices of nutritious diets.
Visiting markets with Ghana Ministry of Food and Agriculture staff
Photos: Anna Herforth
MoFA enumerator collecting food price data
Ghana as a pioneer� This process could be replicated in other countries, based
on existing data collection systems.
� Relevance: The price of nutritious food can be used to inform programs and policy. � Most expensive (limiting) food groups, and foods most
important to nutrient adequacy, can be prioritized in programs and policies.
Indicators Developed� Indexes:
� Cost of a Diverse Diet (CoDD)� Nutritious Food Price Index (NFPI)
� Absolute cost:� Cost of Nutrient Adequacy (CoNA)� Cost of a Recommended Diet (CoRD)
Whatisa“RecommendedDiet”?
• Noglobaldietaryguidelines.
• Scalingup:UsingnationalFBDGswouldtakesignificanttimetocreateadifferentindicatorforeachcountry/region,andwouldlimitinternationalcomparability.
• Arethereanyuniversalrecommendationswecoulduse?
• Diet:the#1riskfactorwithintheglobalburdenofdisease• Yetnoindicatorsofdietqualityaretrackedacrosscountries.
• Norwithinmostcountries.
Existingsourcesofdietarydata?
• DHSandMICS• Onlyyoungchildrenage6-23months,&onlyin60countries
• HouseholdConsumptionandExpenditureSurveys(HCES)• Noindividual-leveldata• Highlyvariable
• Nationaldietaryintakesurveys• Bestcasescenario:NHANES,collectedeveryyear,nationallyrepresentativesample• ExistingdatabeingcompiledbyGIFTandGDD
• WHOSTEPSsurvey• Maynotberepresentativeorconsistentlycarriedoutbycountries• Countriesdonotalwayssharedata
• Noneareimmediatelyfeasibleorsatisfactorytofillthedatagap!
ProposaltodevelopanewDietQualitymoduleintheGallupWorldPoll• In2005,GalluplaunchedtheWorldPolltocollecthigh-qualitydataworldwidewithaconsistentmethodologythatallowsGalluptoannuallycoveratleast98%ofthepopulationoverage15.
• Nationallyrepresentativesurveysin>160countries• Allowsforcomparisonsacrosscountries,trendsovertime,andunderstandingdifferencesbygender,age,andincomelevel
• GallupWorldPollsuccessfullyimplementedFIESforthelasttwoyears
• Team• AndrewRzepa,PabloDiego-Rosell,AnnaHerforth,TerriBallard,PatrickWebb• Advisoryboard
Desiredcharacteristicsofadietqualitymodule• Reflectiveofthemostcriticalpiecesofdietqualityacrosscountries• Coversbothadequacyandprotectionagainstdiet-relateddisease• Standardizedandcomparableacrosscultures• Simpletoadministerandscore
• doesn’trequireintensiveanalysissuchasconversionoffoodstonutrientcontent
• Easilyinterpretable
Goal/Premise
• Wearenotseekingtomeasuredietqualitycomprehensively.• Rather,weseekindicatorsthatgiveastrongindicationofdietquality.
Whatarehealthydiets- review• Whatshouldcross-culturallyvaliddietqualityindicatorsmeasure?
• Internationaldietaryguidance• Nationalfood-baseddietaryguidelines• Dietpatternsusedfrequentlyinliterature
• e.g.DASH,Mediterranean• GlobalBurdenofDiseasestudy
2016
WHO:HealthyDietFactSheet
• Ahealthydietprotectsagainstmalnutritioninallitsforms• Includesadequacy,andprotectionagainstdiet-relatedNCDs.
• Fruits,vegetables,legumes(e.g.lentils,beans),nutsandwholegrains(e.g.unprocessedmaize,millet,oats,wheat,brownrice).
• Atleast400g(5portions)offruitsandvegetablesaday.• Limitsonfreesugars,fats(especiallytransfatsandsaturatedfats),andsalt.
• Theseareoftenfoundinultra-processedfoods-->Lowinhealthydiets.
WHOHealthyDietFactSheet
FBDGs
• 88countries• Europe33• NorthAmerica2• NearEast4• LatinAmericaandtheCaribbeanregion27
• AsiaandthePacific16• Africa6
Mostcommonmessagesacrosscountries
• Consumefruitsandvegetables(95%ofcountriesinkeymessages;100%ofcountriesingraphicimages)
• Limitconsumptionof:• salt(70%)• variousfats/fattyfoods(63%)• sugars(51%)
• Fewcountriesspecifiedrecommendedamountsof“proteinfoods”ornecessarytypes(substitutable)
Guidanceonfruitandvegetableconsumption
0102030405060708090
100
FruitsandVeg
Amount Variety Colors Fresh Local
Source:Arimond etal.,inpreparation
GDDandGBD
• TheGlobalDietaryDatabase(GDD)• compilesover1,000dietaryintakesurveysfrom178countries• Providesthedietarydatafor:
• GlobalBurdenofDisease(GBD)study• startedin1990• aimstodeterminecomparablecross-country,regionalandglobalestimatesoftheburdenofdiseases,injuriesandriskfactors
Dietaryriskfactorsglobally,allages
Source:GBD-comparetool
Numberofregionswhereeachglobaldietaryriskfactorisoneofthetopthreedietaryriskfactorsin-region
Source:Herforth2016,Gallup.
Hopeforcross-culturalvalidity
• “Theexactmake-upofadiversified,balancedandhealthydietwillvarydependingonindividualneeds(e.g.age,gender,lifestyle,degreeofphysicalactivity),culturalcontext,locallyavailablefoodsanddietarycustoms.Butbasicprinciplesofwhatconstituteahealthydietremainthesame.”
• WHOHealthyDietsFactSheet
Summaryofdietaryguidancearoundtheworld• Emphatic:
• Eatanabundantvarietyoffruitandvegetables.• Donoteatultra-processedfoods,includingSSBs,processedmeatsandsaltyandsugarysnacks.
• Donoteatindustrially-producedtransfats(inmargarineorprocessedfoods).
• Advicethatcomesupinmostguidanceandevidenceincludes:• Eatwholegrains.• Forfatsandoils,useunsaturatedvegetableoils.
• Whattodoaboutprotein:• Legumesandnutsarehighlyrecommended;fishishighlyrecommendednutritionallybutnotenvironmentallyfeasibleforall;milk/yogurtisgenerallypositivedependingonlactosetoleranceandfoodculture;littletosayabouteggsandunprocessedpoultry;unprocessedredmeatisgenerallynegative;andprocessedmeatsarenotadvisable.
Source:Herforth2016,Gallup.
Source:InDefenseofFood,MPollan
Principlesofsustainablediets• Diversity• Basedonminimallyprocessedtubersandwholegrains,legumes,fruitsandvegetables,seedsandnuts
• Meat,ifeaten,inmoderatequantitiesandallanimalpartsconsumed
• Dairyproductsoralternativeseateninmoderation• Smallquantitiesoffishandaquaticproductssourcedfromcertifiedfisheries
• Verylimitedconsumptionoffoodshighinfat,sugarorsaltandlowinmicronutrients(i.e.ultra-processedfoods)
• Tapwaterinpreferencetootherbeverages
Proposeddietaryelementstomeasure
• Health-ProtectiveDiet• Indicatortobedevelopedbasedon:• Consumptionoffruitsandvegetables
• AND/OR plantfoodsingeneral,includingfruits,vegetables,wholegrains,legumesandnuts
• Consumptionofultra-processedfoods
• Adequacy• Useestablishedindicator:MDD-W
MinimumDietaryDiversity– Women(MDD-W)
Darkgreenleafyvegetables
OthervitaminArichfruitsandvegetables
Otherfruits Othervegetables
Dairy Eggs Meat,poultryandfish
Starchystaples
NutsandseedsPulses
Slide:AnnaHerforth
Summary:DietQualitymonitoring• ProposalforadietqualitymoduletoimplementinGallupWorldPoll
• Wouldmonitordietqualityin160countries
• Proposedelementsofthemodule• Adequacy(throughtheMDD-Windicator)• Dietpatternsthatprotecthealth
• Needsupport– SDCisfundinghalfthecost2016
Updatesneededtocurrentglobalfoodmetrics
1. Foodpricesshouldreflectthepriceofwhatpeopleneedtoeat2. Weneedtostartmeasuringdietsacrosscountries.
• Accessto andconsumptionofhealthydietsarecoretosharedvisionforfood• Withoutinformation,theseareasarepolicy-invisible