Exploring vegan diets and dietary supplements during pregnancy and childhood

Can Dietary Supplements be Linked to a Vegan Diet and Health Risk Modulation During Vegan Pregnancy, Infancy and Early Childhood

Observational University of Vienna · NCT06669819

This study looks at how vegan pregnant women and parents choose dietary supplements and what challenges they face in making sure their kids get the right nutrients.

Quick facts

Study typeObservational
Enrollment1000 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Vienna Academic / other
Locations1 site (Vienna, Austria)
Trial IDNCT06669819 on ClinicalTrials.gov

What this trial studies

This observational study aims to investigate the factors influencing vegan pregnant women and parents regarding their dietary supplement intake and knowledge of potential nutrient deficiencies. It will gather data through a cross-sectional survey targeting individuals who follow a vegan diet during pregnancy or feed their children a vegan diet. The study seeks to understand the challenges faced in administering dietary supplements to children and the role of medical experts in providing reliable nutritional information. The findings will help inform future guidance for vegans on maintaining a balanced diet during critical developmental phases.

Who should consider this trial

Good fit: Ideal candidates include vegan pregnant women and parents of children aged 0-5 years who adhere to a vegan diet.

Not a fit: Patients who do not follow a vegan diet or whose children are older than 5 years may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the nutritional knowledge and health outcomes of vegan pregnant women and their children.

How similar studies have performed: While there is limited data on this specific approach, previous studies have highlighted the importance of dietary supplements for vegans, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

A. For vegans:

1. Females/gender-diverse participants (ages 18 and over) who follow/followed a vegan diet during their pregnancy/pregnancies (If there is/was more than one pregnancy, at least during one of their pregnancies)
2. Parents (females/males/gender-diverse - ages 18 and over) who feed/fed their child/children (If there is more than one child, at least one of them) a vegan diet within the age of 0-5 years
3. Vegan mothers/gender-diverse participants (ages 18 and over) who breastfeed/breastfed their infant(s)/child(ren). Answering questions regarding their infant(s)/child(ren) up to an age of 5 years will be included
4. Pregnant and breastfeeding women/gender diverse participants/parents (f/m/d) who make rare exceptions to their vegan diet and a vegan diet of their child(ren) - up to an age of 5 years. Inclusion in the survey depends on the frequency of exceptions → determined through questions/given answers within the survey. Participants that consume animal products maximum twice a month will be included - hence participants who do not make vegetarian or pescetarian exceptions more than twice a month will be included 5.Confirmation of the consent form and participant information ( online - addressing the subjects, purpose and process of the study, opportunities for discussion of further questions, duration of the questionnaire, who is conducting the study, possibility for further inquiries)

B. For medical experts:

1. Gynaecologists, paediatricians, general practitioners, pharmacists, dieticians with or without a consulting focus on vegans
2. Confirmation of the participant information/written consent

Exclusion Criteria:

A. For vegans:

1. Females/gender-diverse participants who change/changed their vegan diet (eat/ate a vegetarian or omnivorous diet) during their pregnancy/pregnancies
2. Parents who do not feed/have never fed their children a vegan diet at least up to an age of 5 years (If vegan mothers followed a vegan diet during their pregnancy, exclusion only relates to questions concerning their children)
3. No confirmation of the consent form and participant information (online) For the inclusion into the study at least one inclusion criteria (plus participant information) must be fulfilled. Exclusion (or not inclusion) will happen if only exclusion 3 is fulfilled. If only 1 or 2 is fulfilled - and 3 is not, participants will be included in the survey. All criteria will be proven by the study physician.

B. For medical experts:

1. Other medical specialists than mentioned in inclusion criteria
2. No confirmation of the participant information/no written consent For the inclusion into the study all criteria must be fulfilled. Exclusion (or not inclusion) will happen if only one exclusion criteria is fulfilled. All criteria will be proven by the study physician.

All participants have do understand the German language in order to answer the questionnaire.

Where this trial is running

Vienna, Austria

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Vegan DietPregnancyDietary SupplementsChildhoodveganpregnancypregnantchildhood
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.