Effectiveness of Fortification With Folic Acid and Vitamin B12 Among Teenage Girls

Study Overview
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Brief Summary
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Folic acid and vitamin B12 play an interdependent role in key cellular processes, namely deoxyribonucleic acid synthesis, cell division, red blood cell formation, and nervous system myelination. A deficiency of either vitamin will predispose teenagers to many diseases, which persist across their lifespan. Fortification of food with micronutrients has been promoted to reduce micronutrient deficiencies. A large segment of vulnerable populations in low- and middle-income countries (LMICs) resides in rural settings and has limited access to large-scale commercialized fortified foods. In such operational constraints, the use of locally (small-scale) fortified cereals could be an alternative intervention. The study aims to evaluate the effectiveness of small scale folic acid and vitamin B12 fortified cereals in improving folate and vitamin B12 status, growth velocity, puberty status, anaemia, cognitive development and mental health among teenage girls, in rural rift valley of Ethiopia.

Detailed Description
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Folic acid (FA) and vitamin B12 play an interdependent role in key cellular processes, namely deoxyribonucleic acid synthesis, cell division, red blood cell formation, and nervous system myelination. Teenagers are the future mothers. Hence their health and nutritional status have long term consequences on future pregnancies and birth outcomes. Neural Tube Defects (NTDs) are a group of fatal or severely disabling birth defects known to be mainly a consequence of severe folate deficiency in early pregnancy. The policy of advising women to take iron & FA (IFA) supplements during pregnancy has not been successful in preventing NTDs because of the low adherence to antenatal care services including IFA, the large proportion of unplanned pregnancies, the timing at which IFA supplementation starts, and the logistical limitation that makes the access to IFA limited. The evidence is strong on the importance of food fortification in the promotion of maternal and child health mainly through reducing micronutrient deficiencies. A large segment of vulnerable populations in developing countries resides in rural settings and has limited access to fortified foods in the market. In such operational constraints, using locally fortified cereals could be an alternative intervention. However, there is a paucity of evidence regarding effectiveness of small-scale cereal-based fortification; in Ethiopia, the evidence is inexistent. Moreover, teenage girls are an under-studied group and do not constitute a target population from different nutritional intervention programs. The overall objective of this study is to evaluate the effectiveness of small-scale folic acid and vitamin B12-fortified cereals in improving folate and vitamin B12 status, growth velocity, puberty status, anaemia, cognitive development and mental health among rural teenage girls (13-19 years of age). This study will be conducted in Arba Minch Health and Demographic Surveillance Sites (AM-HDSS), Southern Ethiopia from October 2023 to April 2024. Effectiveness of intake of folic acid and vitamin B12 fortified meals will be evaluated in a randomized, double-blind controlled trial among 474 teenage girls between 13 and 19 years of age who are residing in and attending one of the schools at AM-HDSS. Data on the following variables, except for demographic characteristics of teenage girls and their respective parents and/or household heads will be collected at the start and end point of the 6 months intervention. Data collection will be carried out at schools and at respective girls' home. Demographic characteristics of the teenage girls, morbidity status, helminthic infections, dietary intake, anthropometry, puberty status, presence of depressive symptoms, biochemical samples and cognitive development will be assessed in teenage girls directly at schools. Socio-demographic characteristics of the parents or the head of the household if different from parents, family wealth status, food security, health care services and environmental characteristics will be collected in recruited teenage girls' households within the one week following the enrolment and at the end of the intervention.

Official Title
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Does Small Scale Cereal-based Fortification Hold the Key to Improved Micronutrient Status in Ethiopia? The Case of Folic Acid and Vitamin B12 in Teenage Girls in Arba Minch, Ethiopia

Conditions
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Folate Deficiency, Vitamin B 12 Deficiency, Anemia, Megaloblastic, Cognitive Development, Depressive Symptoms

Intervention / Treatment
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* Dietary Supplement: Folic acid and vitamin B12 fortified flour
* Other: Unfortified cereal flour


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Teenage girls between 13 and 19 years of age who live in households at Arba Minch Health and Demographic Surveillance Sites (AM-HDSS) are eligible to participate in the study if: One or both of their parents signed an informed consent form and the girl's agreement. Their parents and the girl planned to stay in the study area during the period of the study (minimum 6 months) in the kebele. Both parents and girls accept the intervention packages including blood draws and home visits. Exclusion Criteria: Chronically ill girls diagnosed with diabetes and asthma; Severely undernourished girls (defined as body mass index z score < -3 standard deviations of the median World Health Organization reference population); Severely anaemic girls (Hb concentration <80g/L); Teenage girls who are pregnant, lactating or taking IFA/B12 supplements; Diagnosed hemoglobinopathy (sickle cell or thalassemia); Diagnosed liver diseases like acute hepatitis, cirrhosis, hepatocellular carcinoma, and metastatic liver disease

Ages Eligible for Study
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Minimum Age: 13 Years
Maximum Age: 19 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: In randomized control trial, eligible teenage girls attending one of the schools in AM-HDSS will be randomly assigned to: An intervention group receiving a standard bag of cereal flours fortified with folic acid and Vitamin B12 at local mills every week for six months. A placebo group receiving a standard bag of unfortified cereal flours every week for six months. Participants in all the treatment groups remain eligible to benefit from the standard health care and nutrition programs provided at school, such as deworming at the beginning of the school year.
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Placebo Comparator: Control group<br>Teenage girls randomly assigned to the control group will receive a standard bag of unfortified cereal flours every week for six months. | Other: Unfortified cereal flour<br>* Standard bags of unfortified cereal-based flours will be prepared at local mills from the common staple cereal food in the area. Participants will be supplied with 6 kg bags of flour, which will be enough for 30 days, and 1.5kg bags of flour will be delivered to their home on a weekly basis and lasting for 6 months. Instructions on the preparation of meals and frequency of intake with a weekly compliance sheet will be provided for monitoring the intervention.<br>* Other names: Control group;|
| Experimental: folic acid & vit B12 fortified flour<br>Teenage girls randomly assigned to the control group will receive a standard bag of cereal flours fortified with folic acid and Vit B12 every week for six months. | Dietary Supplement: Folic acid and vitamin B12 fortified flour<br>* Standard bags of fortified cereal-based flours will be prepared at local mills from the common staple cereal food in the area. The dose of vitamins will be added to the flour of the intervention group and mixed with batch mixing technique. The concentration of folic acid and vitamin B12 per 1kg of flour will be 2mg and 0.02mg, respectively. Participants will be supplied with 6 kg bags of flour, which will be enough for 30 days, and 1.5kg bags of flour will be delivered to their home on a weekly basis and lasting for 6 months. Instructions on the preparation of meals and frequency of intake with a weekly compliance sheet will be provided for monitoring the intervention.<br>* Other names: Intervention group;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Serum folic acid concentrations | Serum folate levels ng/ml (nmol/l) | Assessed at 6 months | 
| Erythrocyte (RBC) folic acid concentrations | RBC folate level ng/ml (nmol/l) | Assessed at 6 months | 
| General cognitive ability | Raven Progressive Matrices (RPM) tests, a measure of nonverbal intelligence. | Assessed at 6 months | 
| Working memory | Digit Span (Forward, Backward, and Sequencing) is a standardized test that assesses the working memory of participants. | Assessed at 6 months | 
| Depression | Depressive symptoms will be assessed by Patient Health Questionnaire (PHQ) 9 modified for adolescents (PHQ-9A), a self-report instrument comprised of 9-items. Items are rated on a four-point ordinal scale. | Assessed at 6 months | 
| Serum vitamin B12 concentrations | Serum vitamin B12 level (pmol/L) | Assessed at 6 months | 
| Fat-free mass | An index of adiposity will be measured to evaluate girls' body composition, in % | Assessed at 6 months | 
| Fat mass | An index of adiposity will be measured to evaluate girls' body composition, in kg | Assessed at 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| RBC structure (megaloblastic anaemia) | Mean Corpuscular Volume (MCV) in femtoliters/fl | Assessed at 6 months | 
| Plasma homocysteine concentrations | Plasma homocysteine level (µmol/L) | Assessed at 6 months | 
| Weight | Participant weight (kg) | Assessed at 3 and 6 months | 
| Adherence to the intervention/fortification | adherence to the flour consumption will be assessed through home to home visit in a weekly basis. | Assessed weekly for the whole period of intervention (until 6 months) | 
| Haemoglobin concentration | Haemoglobin concentration (g/dl) | Assessed at 6 months | 
| Height | Participant height (cm) | Assessed at 6 months | 
| Puberty status | The pubertal status will be assessed by Pubertal Development Scale which has a 4-point scale ranging from 1 (has not begun) to 4 (development completed). Girls will report on their body hair development, growth spurt, skin changes, breast development and the occurrence of menarche (1=no and 4=yes). | Assessed at 6 months of fortification | 
| Prevalence of soil-transmitted helminths | The presence of worm parasites and egg density in the stools. Three common parasites and their eggs will be investigated, i.e. Ascaris lumbricoides (round worm), Trichuris trichiura (whipworm) and Ancyclostoma duodenale or Necater americanus (hookworms) | Assessed at 6 months | 
| Prevalence of Schistosome infection | The prevalence of Schistosoma mansoni infection | Assessed at 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Small scale fortification, Folic acid, Vitamin B12, Anemia, Cognitive development, Teenage girls