J. Philip Karl, PhD, RD (he/him/his)

Nutritional Physiologist
U.S. Army Research Institute of Environmental Medicine
Roslindale, Massachusetts, United States

J. Philip Karl PhD, RD is a Nutrition Physiologist in the Military Nutrition Division at the U.S. Army Research Institute of Environmental Medicine (USARIEM). Dr. Karl began his current position in 2015 after obtaining a PhD in Biochemical and Molecular Nutrition from Tufts University where his research focused on interactions between diet, the gut microbiota, and human vitamin K nutriture. Dr. Karl’s current research aims to characterize how diet, stress and the gut microbiome interact to impact human physiology, and to identify nutritional strategies for leveraging the gut microbiome to improve health and performance. Additional areas of research include studying the effects of diet composition and stress on eating behavior, appetite, and health outcomes.

Presentation(s):

• (OR15-01-25) Effects of Fermentable Fiber and Polyphenol Supplementation on Fecal Bacteria Populations and Respiratory Mucosal Immunity in Healthy Adults

  Monday, June 2, 2025
  2:00 PM – 2:12 PM ET

  Disclosure(s): No relevant financial relationship(s) with ineligible companies to disclose.

• Nutritional Immunology and Inflammation/Immunometabolism (Oral Session 15)

  Monday, June 2, 2025
  2:00 PM – 3:30 PM ET

  Disclosure(s): No relevant financial relationship(s) with ineligible companies to disclose.

• (OR20-03-25) Higher Fat Combat Rations Minimize Energy Deficits During a 5-Day Military Training Exercise

  Tuesday, June 3, 2025
  8:56 AM – 9:06 AM ET

  Disclosure(s): No relevant financial relationship(s) with ineligible companies to disclose.