A Gram Research analysis of the EDEN mother-child cohort found that girls who ate more fat at 12 months had higher body weight at ages 5-6 years, while boys who consumed more sugar showed less healthy cholesterol patterns including higher triglycerides and lower HDL cholesterol. The study of over 600 children suggests that the types of nutrients babies consume during their first year may influence their heart and metabolic health several years later, though the effects were modest and more research is needed to understand the mechanisms.
A new study from the EDEN mother-child cohort followed over 600 children from infancy through early childhood to understand how what babies eat affects their heart and metabolic health. Researchers found that girls who ate more fat at 12 months had higher weight at ages 5-6, while boys who consumed more sugar showed less healthy cholesterol and triglyceride levels. The findings suggest that the foods we introduce to babies during their first year may have lasting effects on their cardiovascular health, though more research is needed to understand exactly why these patterns emerge.
Key Statistics
A cohort study of 426 boys and 387 girls from the EDEN mother-child cohort found that girls with higher fat intake at 12 months had significantly higher body weight scores at ages 5-6 years (β = 0.07), suggesting early fat consumption may contribute to childhood weight gain.
In the same 2026 EDEN cohort study, boys who consumed more simple sugars at 12 months showed less favorable cholesterol patterns at ages 5-6, including higher triglycerides and LDL cholesterol and lower HDL cholesterol (β = 0.22), indicating sugar intake in infancy may influence boys’ cardiovascular health markers.
The EDEN mother-child cohort analysis identified four distinct cardiometabolic health patterns in preschool children, revealing that early macronutrient intake connects to specific combinations of weight, blood pressure, and cholesterol rather than affecting all children uniformly.
Research from the EDEN cohort showed sex-specific effects of early nutrition, with girls consuming more sugar displaying higher blood pressure but lower adiposity at ages 5-6, while boys with higher sugar intake showed unfavorable lipid profiles, suggesting biological sex influences how infant diet shapes later health.
The Quick Take
- What they studied: Whether the types and amounts of fat, protein, carbohydrates, and sugar that babies eat at 12 months old influence their heart health and body weight at ages 5-6 years
- Who participated: Over 600 children (426 boys and 387 girls) from the EDEN study, a long-term research project following families from pregnancy onward. Researchers looked at detailed food records from when babies were 1 year old and measured their health markers 4-5 years later
- Key finding: Girls who ate more fat at 12 months had higher body weight at ages 5-6, and boys who ate more sugar showed less healthy cholesterol patterns. According to Gram Research analysis, these early eating patterns appeared to influence later cardiometabolic health markers
- What it means for you: The foods parents introduce during a baby’s first year may have longer-lasting effects on heart and metabolic health than previously thought. However, this is one study, and parents should consult pediatricians about appropriate infant nutrition rather than making major dietary changes based on this finding alone
The Research Details
This was a cohort study, meaning researchers followed the same group of children over time and collected information about what they ate and their health at different ages. When the children were 1 year old, parents kept detailed food records for 3 days, writing down everything their babies ate and drank. Researchers then calculated how much fat, protein, sugar, and other nutrients each child consumed. About 4-5 years later, when the children were 5-6 years old, the researchers measured their weight, height, blood pressure, and took blood samples to check cholesterol and blood sugar levels. They used statistical analysis to see if the foods eaten at 12 months were connected to the health measurements taken years later.
The researchers also identified four different patterns of cardiometabolic health in the children by looking at combinations of their weight, blood pressure, cholesterol, and insulin levels. This approach is more realistic than looking at single measurements, because children’s bodies don’t work in isolation—high cholesterol might appear with high blood pressure, or weight gain might appear with insulin problems. By examining these patterns together, the researchers could see which early eating habits connected to which health combinations.
The study controlled for many other factors that could affect results, including the child’s sex, birth weight, mother’s education, family income, and physical activity levels. This helps ensure that any connections found between early diet and later health weren’t just due to other differences between families.
Following children over several years is important because it shows what actually happens to real children in real families, not just what happens in a laboratory. By measuring diet when babies are young and health years later, researchers can identify whether early eating patterns might influence long-term health. This type of study is stronger than simply comparing children’s diets and health at the same time, because it shows a timeline—the diet came first, then the health outcomes appeared later. Understanding these connections could help pediatricians and parents make better decisions about infant nutrition.
This study has several strengths: it followed a large group of children over time, used detailed food records rather than memory-based estimates, and measured multiple health markers rather than just one. However, the study only measured diet at one point in time (12 months), so it doesn’t show how diet changed as children grew. The study also cannot prove that diet caused the health differences—only that they were connected. Some children dropped out of the study over time, which could affect results. The findings were relatively small in size (though statistically significant), meaning the real-world impact of these diet differences may be modest.
What the Results Show
In girls, eating more fat at 12 months was linked to higher body weight at ages 5-6 years. The connection was modest but consistent—for every standard increase in fat intake, girls’ weight scores increased by 0.07 points on a standardized scale. This suggests that high-fat infant diets may contribute to weight gain in girls during early childhood.
In boys, eating more sugar (in the form of simple sugars like those in juice or sweetened foods) at 12 months was connected to less healthy cholesterol patterns at ages 5-6. Specifically, boys with higher sugar intake had higher triglycerides (a type of blood fat) and LDL cholesterol (the “bad” cholesterol) and lower HDL cholesterol (the “good” cholesterol). The effect size was larger than the fat-weight connection in girls, suggesting sugar intake may have a more noticeable impact on boys’ cholesterol patterns.
Interestingly, girls who ate more sugar showed a different pattern—they were more likely to have higher blood pressure but lower body weight at ages 5-6. This suggests that sugar may affect boys and girls differently, possibly due to biological differences in how their bodies process nutrients. The researchers found no significant connections between protein intake and any of the health markers studied.
The study identified that cardiometabolic health in young children isn’t just about weight—it involves combinations of weight, blood pressure, cholesterol, and insulin resistance working together. Some children had high weight but normal blood pressure, while others had normal weight but high blood pressure. This pattern-based approach revealed that early diet connects to specific combinations of health markers rather than affecting all children the same way. The sex differences were particularly notable: the same nutrient (sugar) affected boys and girls differently, suggesting that biological sex influences how early nutrition shapes later health.
Earlier research has suggested that early nutrition affects later health, but most studies looked at single outcomes like weight or cholesterol separately. This study is more comprehensive because it examined multiple health markers together, which is more realistic since these markers often appear together in real children. The findings align with previous research showing that high sugar intake is linked to less healthy cholesterol patterns, but the study adds new information by showing these connections appear as early as ages 5-6 and may originate from diet at 12 months. The sex differences found here are interesting and somewhat unexpected, suggesting that future research should examine boys and girls separately rather than combining them.
The study measured diet at only one point in time (12 months), so it doesn’t show whether diet stayed the same or changed as children grew. The sample size for the cardiometabolic phenotype analysis (256 boys and 221 girls) was smaller than for the weight analysis, which means some findings may be less reliable. The study cannot prove that early diet caused the later health differences—only that they were connected. Some families dropped out of the study over time, and the families who stayed in the study may have been different from those who left. The study was conducted in France, so results may not apply to children in other countries with different food cultures and availability. Finally, the effect sizes were relatively small, meaning the real-world impact of these diet differences may be modest.
The Bottom Line
Based on this research, pediatricians may want to discuss appropriate fat and sugar intake with parents of infants, particularly considering sex-specific patterns. Current infant nutrition guidelines already recommend limiting added sugars and choosing healthy fats, and this study provides additional support for those recommendations. However, parents should not restrict fat intake in infants, as fat is essential for brain development—the key is choosing healthy fats and avoiding excessive amounts. For practical guidance, parents should follow their pediatrician’s recommendations for introducing solid foods and limiting added sugars, rather than making major dietary changes based on this single study. Confidence level: Moderate—the study is well-designed but represents one cohort in one country.
Parents of infants and young children should be aware of these findings, particularly those with family histories of high cholesterol or weight problems. Pediatricians may use this information when counseling families about infant nutrition. Public health officials developing infant nutrition guidelines may find this research useful. However, these findings should not cause parents to restrict healthy fats from their babies’ diets, as fat is crucial for infant brain development. The study is most relevant to families in developed countries with access to varied food choices.
The health effects measured in this study appeared 4-5 years after the dietary measurements, suggesting that early nutrition influences health over a medium-term timeframe. Parents shouldn’t expect to see immediate changes in their child’s health based on diet adjustments—the effects appear to develop gradually over years. However, establishing healthy eating patterns early may help prevent problems from developing in the first place.
Frequently Asked Questions
Does what my baby eats at 1 year old affect their heart health later?
Research from the EDEN cohort suggests yes—girls who ate more fat at 12 months had higher weight at ages 5-6, and boys who ate more sugar showed less healthy cholesterol levels. However, this is one study, and the effects were modest. Consult your pediatrician about appropriate infant nutrition.
Should I limit fat in my baby’s diet to prevent weight gain?
No—fat is essential for infant brain development. The study found connections between high fat intake and later weight, but this doesn’t mean babies need low-fat diets. Focus on healthy fats and appropriate portion sizes, following your pediatrician’s guidance rather than restricting fat.
What sugary foods should I avoid giving my toddler?
Limit added sugars from juice, sweetened yogurt, desserts, and sugary drinks. The EDEN study found that higher sugar intake at 12 months connected to less healthy cholesterol patterns by ages 5-6. Water, breast milk, and formula are better choices for beverages.
Are these findings the same for boys and girls?
No—the study found sex-specific effects. Sugar intake affected boys’ cholesterol patterns more noticeably, while fat intake affected girls’ weight more. This suggests boys and girls may respond differently to early nutrition, though more research is needed.
How long does it take to see health effects from infant diet changes?
The EDEN study measured effects 4-5 years after diet was recorded, suggesting health impacts develop gradually over years rather than weeks or months. Establishing healthy eating patterns early may help prevent problems from developing, but immediate changes shouldn’t be expected.
Want to Apply This Research?
- Track your child’s daily fat and sugar intake (in grams) from ages 12-24 months, comparing it to pediatric guidelines. Use the app to log meals and snacks, then review monthly trends to see if intake is within recommended ranges for your child’s age
- Set a specific goal to reduce added sugars in your toddler’s diet by identifying and replacing one sugary food or drink per week with a healthier alternative. For example, replace juice with water or diluted juice, or swap sweetened yogurt for plain yogurt with fresh fruit
- Create a 6-month tracking plan that monitors your child’s growth (weight and height percentiles) alongside dietary intake. Use the app to set reminders for pediatric check-ups and record blood pressure and cholesterol measurements when available, allowing you to see patterns over time
This research describes associations between infant diet and later health markers but does not prove that diet caused these health differences. Individual children vary greatly, and many factors beyond diet influence health outcomes. Parents should not make significant changes to their infant’s diet based on this single study. Infants require adequate fat for brain development, and any dietary concerns should be discussed with a pediatrician. This article is for informational purposes only and should not replace professional medical advice. If you have concerns about your child’s growth, weight, or health, consult your healthcare provider.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.