Healthy aging expert says fiber is the top nutrient to prioritize

Dr. Ezekiel J. Emanuel tells TODAY.com he prioritizes dietary fiber for healthy aging, and reports show most U.S. adults consume about 14 grams daily versus the 25–38 grams recommended.

Dr. Ezekiel J. Emanuel, author of Eat Your Ice Cream, spoke with TODAY.com about focusing on aging healthily rather than only extending lifespan. He identifies dietary fiber as the single nutrient he prioritizes for long-term health. Emanuel frames healthy aging as making nutritious choices most of the time while allowing occasional treats. He also discusses fiber alongside fermented foods and prebiotic sources that support gut health. What is known: - Emanuel says fiber supports gut health, helps with heart health and aids blood sugar control. - Recommended daily fiber intake is generally between 25 and 38 grams, while average intake in the U.S. is reported at about 14 grams per day. - One estimate cited in the article finds roughly 5% of U.S. adults reach recommended fiber goals. - Emanuel prefers meeting fiber needs through whole foods rather than supplements and mentions fruits, vegetables, whole grains, legumes, nuts, seeds and oats as sources. - The article notes fermented foods (such as yogurt, kimchi and kefir) and prebiotic-rich foods (for example asparagus, green peas, apples, oats and flaxseeds) as contributors to a favorable gut microbiome. Summary: Dietary fiber is presented as a priority nutrient for healthy aging because of its links to digestive, cardiovascular and metabolic health. Undetermined at this time.