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Could Dad’s diet influence his offsprings’ he

Could Dad’s diet influence his offsprings’ he

Students in Ramalingam’s lab


Researchers found that the offspring of male mice that consumed fish oil had a lower body weight and showed better metabolic health than the offspring of fathers not supplemented with fish oil. 

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Credit: Courtesy of Syracuse University

Chicago (June 29, 2024) — A study performed in mice has uncovered a potential new tool to combat the escalating issue of childhood obesity. The research suggests that a simple dietary change, in the form of a fish oil supplement taken by fathers, might help address this pressing health concern.

The number of young people ages 5 to 19 who are obese has risen from 31 million in 1990 to 160 million in 2022, according to the World Health Organization. This extra weight can increase the risk of diabetes, high blood pressure and high cholesterol and may also lead to poor self-esteem and depression.

To find out whether paternal diet could influence offspring health, researchers gave male mice a high-fat diet with or without added fish oil. They found that the offspring of the males that consumed fish oil had a lower body weight and showed better metabolic health than the offspring of fathers not supplemented with fish oil.

“While further human studies are needed, this discovery opens a new frontier in our understanding of how parents, beyond just genetics, influence their offspring’s well-being,” said Latha Ramalingam, PhD, assistant professor in nutrition at Syracuse University. “Fish oil, a readily available and safe supplement, could become a powerful weapon in our fight for a healthier next generation.”

Sarah Dellet, a graduate student in Ramalingam’s lab, will present the findings at NUTRITION 2024, the flagship annual meeting of the American Society for Nutrition held June 29–July 2 in Chicago.

The researchers say this is the first study to examine inheritance patterns exclusively in the paternal line. It builds on their previous work, which demonstrated the benefits of fish oil supplementation in mothers for reducing childhood obesity risk.

In the new study, which involved almost 150 mice, the researchers fed male mice a high-fat diet either with or without added fish oil. They were then mated with female mice that consumed a regular healthy low-fat diet.

The researchers found that offspring that were fed a low-fat healthy diet and fathered by males receiving fish oil weighed less at 7 and 21 days than offspring of the males not receiving fish oil. Female offspring from males receiving fish oil also had improved metabolic health as measured by glucose clearance and insulin sensitivity.

“This concept offers a significant potential to reshape our strategies in combating childhood obesity,” said Ramalingam. “Picture a future where pre-conception dietary guidance isn’t solely directed at mothers, but also involves fathers, enabling them to play a more active role in promoting their children’s well-being right from the start.”

The researchers are now studying the potential mechanisms through which dietary changes affect sperm, aiming to better understand how this information transfer influences the subsequent generation. They are also investigating muscle and liver gene expression to gain deeper insights into the genetic foundation of the enhanced insulin sensitivity in females.

Dellet will present this research at during the Graduate Student Research Award Competition at 9:30 a.m.-12 p.m. CDT on Saturday, June 29 (presentation details) and at 9-9:12 a.m. CDT on Sunday, June 30, during the Vitamins and Minerals Session in McCormick Place (abstract; presentation details).

Please note that abstracts presented at NUTRITION 2024 were evaluated and selected by a committee of experts but have not generally undergone the same peer review process required for publication in a scientific journal. As such, the findings presented should be considered preliminary until a peer-reviewed publication is available.

About NUTRITION 2024

NUTRITION 2024 is the flagship meeting of the American Society for Nutrition and the premier educational event for nutritional professionals around the globe. NUTRITION brings together lab scientists, practicing clinicians, population health researchers, and community intervention investigators to identify solutions to today’s greatest nutrition challenges. Our audience also includes rising leaders in the field –undergraduate, graduate, and medical students. NUTRITION 2024 will be held June 29–July 2, 2024 in Chicago. #Nutrition2024

About the American Society for Nutrition (ASN)

ASN is the preeminent professional organization for nutrition research scientists and clinicians around the world. Founded in 1928, the society brings together the top nutrition researchers, medical practitioners, policy makers and industry leaders to advance our knowledge and application of nutrition. ASN publishes four peer-reviewed journals and provides education and professional development opportunities to advance nutrition research, practice, and education. Since 2018, the American Society of Nutrition has presented NUTRITION, the leading global annual meeting for nutrition professionals.

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