Vegan Diets in Children: New Study Highlights Potential Nutrient Deficiencies
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A comprehensive meta-study published December 16, 2025, reveals both the health benefits and potential risks of vegan diets for children and adolescents, as more families in Germany and beyond embrace plant-based eating.
A growing number of families are opting for vegan and vegetarian lifestyles. According to a recent nutrition report from the Federal Ministry of Agriculture, Food and Community (BMLEH), approximately 10% of the German population identifies as vegetarian, while 2% follow a vegan diet – excluding all animal products. The German Nutrition Society (DGE) has updated its guidance on vegan nutrition, recommending it as a viable option, but also cautions about potential deficiency symptoms in certain groups, particularly children.
Researchers at the University of Florence undertook a large-scale meta-study to assess the suitability of vegan diets for children. Their analysis encompassed 59 studies from 18 countries, examining the health and nutritional data of over 48,000 children and adolescents.
Nutritional Intake: A Mixed Picture
The data indicates that vegan children generally consume higher levels of fiber, folic acid, vitamin C, magnesium, and iron compared to their peers who eat meat. However, they tend to have lower intakes of calories, protein, fat, vitamin B12, and zinc. A recent study from Massey University found that most vegans are lacking in essential amino acids.
“Notably, vitamin B12 did not reach adequate levels without supplementation or fortified foods, and intakes of calcium, iodine and zinc were often at the lower end of recommended levels, making them important nutrients for children on plant-based diets,” one researcher stated.
Interestingly, the study also found that vegan children exhibit lower levels of total and LDL cholesterol, suggesting a more favorable cardiovascular health profile.
Growth and Weight Considerations
The meta-study also revealed that vegan children, on average, have a lower body mass index (BMI) and are slightly smaller than children who consume animal products. These differences, however, are minimal, typically measuring just a few millimeters. A separate study conducted by the University of Toronto (UToronto) indicated that meat-free diets may increase the risk of underweight in children.
According to scientists at the University of Florence, a vegan or vegetarian diet is not inherently unsuitable for children. However, they emphasize the critical importance of careful dietary planning to prevent nutrient deficiencies, especially during periods of rapid growth. Parents must be vigilant in ensuring their children receive adequate nutrition through a well-balanced plant-based diet, potentially including supplementation where necessary.
Sources:
Nutrition report from Federal Ministry of Agriculture, Food and Homeland (BMLEH)
Position of the German Society for Nutrition (DGE) on vegan nutrition
Study in the specialist magazine Critical Reviews in Food Science and Nutrition (doi: 10.1080/10408398.2025.2572983)
Ultimately, the research underscores that while plant-based diets can be healthy for children, proactive attention to nutritional needs is paramount for optimal development.
