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DENVER – , according to new data presented at the American Academy of Pediatrics (AAP) 2025 National Conference & Exhibition.
Necrotizing enterocolitis (NEC) can affect the intestinal wall of neonates, with potentially life-threatening results. The inflammatory condition is characterized by feeding intolerance, rectal bleeding, and bowel perforations, said presenting author Puja Kulkarni, medical student at California Northstate University College of Medicine, Elk Grove, California, and colleagues.
The etiology of NEC remains unclear, but previous research suggests that formula feeding may play a role, the researchers said. “NEC remains a leading cause of morbidity and mortality in premature infants, yet there is still no clear consensus on the optimal feeding strategy to reduce risk,” Kulkarni said in an interview with GI & Hepatology News.
Most hospital guidelines call for solely using SPFs in NICUs, especially in cases where maternal breast milk is not available, said Kulkarni. Therefore, “it was critical to investigate whether different types of formula, such as extensively hydrolyzed formula, could influence the incidence of NEC,” she said.
Kulkarni and colleagues conducted a literature search and identified three randomized, controlled trials that compared eHFs to SPFs in a study population of 1180 premature infants.
Overall, infants who received SPFs had a significantly greater risk for both NEC and feeding intolerance than those who received eHFs, with odds ratios of 2.54 and 2.87, respectively, and these associations remained after a sensitivity analysis.
Other research, such as the German Infant Nutritional Intervention (GINI) study, has shown similar results regarding the effect of formula type on childhood pathologies, Kulkarni noted. The GINI study showed that HFs can help prevent the development of allergic diseases in children with a family history of allergies, she said.
The results of the current analysis suggest a significantly increased risk for NEC, as well as feeding intolerance, which can be a precursor to NEC, in premature infants fed SPFs compared to those fed eHFs, said Kulkarni. “If validated by further research, this could lead to changes in NICU feeding protocols, especially in situations where donor breast milk is not available. Clinicians may want to consider the type of protein in formula as an important factor in NEC prevention,” she said. The current findings support the need for more research into the effects of formula throughout the infant and childhood years.
Additional studies are needed to validate the findings in larger, multicenter cohorts to ensure generalizability, especially in the US, where current guidelines favor SPFs based on limited data, said Kulkarni. Much of the research in the US has been conducted by the formula companies themselves, and she and her colleagues took this risk for bias into account in their meta-analysis.
Younger Babies at Greater Risk
Documented rates of NEC have remained stable or decreased slightly over the past 20 years, which supports the need for research on prevention and early identification, as well as effective medical treatment, said Catherine Haut, DNP, CPNP-AC/PC, in an interview.
“With improved neonatal intensive care, younger neonates are surviving, but these babies also have a higher risk of development of NEC,” said Haut, director of nursing research and evidence-based practice at Nemours Children’s Health, Delaware, New Jersey, who was not involved in the study.
“Historically, NEC has been related to feeding, among other variables, but the use of more specific or standardized feeding methods including increased use of human milk in very low-birth weight infants has resulted in better outcomes,” she said.
The finding from the current meta-analysis that the use of SPFs poses a higher risk for NEC than the use of eHFs was not unexpected, Haut told GI & Hepatology News. Some infants are allergic to cow’s milk, and replacing this type of formula with eHF is the recommended treatment as these formulas incorporate proteins which are more easily digested, she said.
Systematic reviews and meta-analyses are considered high levels of evidence, and the current study’s documentation of the benefits of eHF could help decrease the rate of NEC in premature infants, Haut said. “Despite a higher cost associated with eHF, in formula-fed preterm neonates, there would be benefit to using eHF vs risk of standard protein formulas,” she said.
However, the current study represents a very small population compared to the total number of infants born at less than 37 weeks’ gestation, which is reported to be 10% of all newborns in the US each year, Haut noted.
Additional large studies, including randomized control trials, are needed to further document the effects of using eHF in very young premature infants and potentially help reduce the incidence of NEC in this population, she said.
The study received no outside funding. The researchers and Haut had no financial conflicts to disclose.
A version of this article appeared on Medscape.com.
DENVER – , according to new data presented at the American Academy of Pediatrics (AAP) 2025 National Conference & Exhibition.
Necrotizing enterocolitis (NEC) can affect the intestinal wall of neonates, with potentially life-threatening results. The inflammatory condition is characterized by feeding intolerance, rectal bleeding, and bowel perforations, said presenting author Puja Kulkarni, medical student at California Northstate University College of Medicine, Elk Grove, California, and colleagues.
The etiology of NEC remains unclear, but previous research suggests that formula feeding may play a role, the researchers said. “NEC remains a leading cause of morbidity and mortality in premature infants, yet there is still no clear consensus on the optimal feeding strategy to reduce risk,” Kulkarni said in an interview with GI & Hepatology News.
Most hospital guidelines call for solely using SPFs in NICUs, especially in cases where maternal breast milk is not available, said Kulkarni. Therefore, “it was critical to investigate whether different types of formula, such as extensively hydrolyzed formula, could influence the incidence of NEC,” she said.
Kulkarni and colleagues conducted a literature search and identified three randomized, controlled trials that compared eHFs to SPFs in a study population of 1180 premature infants.
Overall, infants who received SPFs had a significantly greater risk for both NEC and feeding intolerance than those who received eHFs, with odds ratios of 2.54 and 2.87, respectively, and these associations remained after a sensitivity analysis.
Other research, such as the German Infant Nutritional Intervention (GINI) study, has shown similar results regarding the effect of formula type on childhood pathologies, Kulkarni noted. The GINI study showed that HFs can help prevent the development of allergic diseases in children with a family history of allergies, she said.
The results of the current analysis suggest a significantly increased risk for NEC, as well as feeding intolerance, which can be a precursor to NEC, in premature infants fed SPFs compared to those fed eHFs, said Kulkarni. “If validated by further research, this could lead to changes in NICU feeding protocols, especially in situations where donor breast milk is not available. Clinicians may want to consider the type of protein in formula as an important factor in NEC prevention,” she said. The current findings support the need for more research into the effects of formula throughout the infant and childhood years.
Additional studies are needed to validate the findings in larger, multicenter cohorts to ensure generalizability, especially in the US, where current guidelines favor SPFs based on limited data, said Kulkarni. Much of the research in the US has been conducted by the formula companies themselves, and she and her colleagues took this risk for bias into account in their meta-analysis.
Younger Babies at Greater Risk
Documented rates of NEC have remained stable or decreased slightly over the past 20 years, which supports the need for research on prevention and early identification, as well as effective medical treatment, said Catherine Haut, DNP, CPNP-AC/PC, in an interview.
“With improved neonatal intensive care, younger neonates are surviving, but these babies also have a higher risk of development of NEC,” said Haut, director of nursing research and evidence-based practice at Nemours Children’s Health, Delaware, New Jersey, who was not involved in the study.
“Historically, NEC has been related to feeding, among other variables, but the use of more specific or standardized feeding methods including increased use of human milk in very low-birth weight infants has resulted in better outcomes,” she said.
The finding from the current meta-analysis that the use of SPFs poses a higher risk for NEC than the use of eHFs was not unexpected, Haut told GI & Hepatology News. Some infants are allergic to cow’s milk, and replacing this type of formula with eHF is the recommended treatment as these formulas incorporate proteins which are more easily digested, she said.
Systematic reviews and meta-analyses are considered high levels of evidence, and the current study’s documentation of the benefits of eHF could help decrease the rate of NEC in premature infants, Haut said. “Despite a higher cost associated with eHF, in formula-fed preterm neonates, there would be benefit to using eHF vs risk of standard protein formulas,” she said.
However, the current study represents a very small population compared to the total number of infants born at less than 37 weeks’ gestation, which is reported to be 10% of all newborns in the US each year, Haut noted.
Additional large studies, including randomized control trials, are needed to further document the effects of using eHF in very young premature infants and potentially help reduce the incidence of NEC in this population, she said.
The study received no outside funding. The researchers and Haut had no financial conflicts to disclose.
A version of this article appeared on Medscape.com.
DENVER – , according to new data presented at the American Academy of Pediatrics (AAP) 2025 National Conference & Exhibition.
Necrotizing enterocolitis (NEC) can affect the intestinal wall of neonates, with potentially life-threatening results. The inflammatory condition is characterized by feeding intolerance, rectal bleeding, and bowel perforations, said presenting author Puja Kulkarni, medical student at California Northstate University College of Medicine, Elk Grove, California, and colleagues.
The etiology of NEC remains unclear, but previous research suggests that formula feeding may play a role, the researchers said. “NEC remains a leading cause of morbidity and mortality in premature infants, yet there is still no clear consensus on the optimal feeding strategy to reduce risk,” Kulkarni said in an interview with GI & Hepatology News.
Most hospital guidelines call for solely using SPFs in NICUs, especially in cases where maternal breast milk is not available, said Kulkarni. Therefore, “it was critical to investigate whether different types of formula, such as extensively hydrolyzed formula, could influence the incidence of NEC,” she said.
Kulkarni and colleagues conducted a literature search and identified three randomized, controlled trials that compared eHFs to SPFs in a study population of 1180 premature infants.
Overall, infants who received SPFs had a significantly greater risk for both NEC and feeding intolerance than those who received eHFs, with odds ratios of 2.54 and 2.87, respectively, and these associations remained after a sensitivity analysis.
Other research, such as the German Infant Nutritional Intervention (GINI) study, has shown similar results regarding the effect of formula type on childhood pathologies, Kulkarni noted. The GINI study showed that HFs can help prevent the development of allergic diseases in children with a family history of allergies, she said.
The results of the current analysis suggest a significantly increased risk for NEC, as well as feeding intolerance, which can be a precursor to NEC, in premature infants fed SPFs compared to those fed eHFs, said Kulkarni. “If validated by further research, this could lead to changes in NICU feeding protocols, especially in situations where donor breast milk is not available. Clinicians may want to consider the type of protein in formula as an important factor in NEC prevention,” she said. The current findings support the need for more research into the effects of formula throughout the infant and childhood years.
Additional studies are needed to validate the findings in larger, multicenter cohorts to ensure generalizability, especially in the US, where current guidelines favor SPFs based on limited data, said Kulkarni. Much of the research in the US has been conducted by the formula companies themselves, and she and her colleagues took this risk for bias into account in their meta-analysis.
Younger Babies at Greater Risk
Documented rates of NEC have remained stable or decreased slightly over the past 20 years, which supports the need for research on prevention and early identification, as well as effective medical treatment, said Catherine Haut, DNP, CPNP-AC/PC, in an interview.
“With improved neonatal intensive care, younger neonates are surviving, but these babies also have a higher risk of development of NEC,” said Haut, director of nursing research and evidence-based practice at Nemours Children’s Health, Delaware, New Jersey, who was not involved in the study.
“Historically, NEC has been related to feeding, among other variables, but the use of more specific or standardized feeding methods including increased use of human milk in very low-birth weight infants has resulted in better outcomes,” she said.
The finding from the current meta-analysis that the use of SPFs poses a higher risk for NEC than the use of eHFs was not unexpected, Haut told GI & Hepatology News. Some infants are allergic to cow’s milk, and replacing this type of formula with eHF is the recommended treatment as these formulas incorporate proteins which are more easily digested, she said.
Systematic reviews and meta-analyses are considered high levels of evidence, and the current study’s documentation of the benefits of eHF could help decrease the rate of NEC in premature infants, Haut said. “Despite a higher cost associated with eHF, in formula-fed preterm neonates, there would be benefit to using eHF vs risk of standard protein formulas,” she said.
However, the current study represents a very small population compared to the total number of infants born at less than 37 weeks’ gestation, which is reported to be 10% of all newborns in the US each year, Haut noted.
Additional large studies, including randomized control trials, are needed to further document the effects of using eHF in very young premature infants and potentially help reduce the incidence of NEC in this population, she said.
The study received no outside funding. The researchers and Haut had no financial conflicts to disclose.
A version of this article appeared on Medscape.com.