In every grade school class photo, I seem to have a mess of tousled hair on my head. No matter how much my mom tried to tame my hair, it was a little unruly. (I sported the windblown look without even trying.) Later came my metalhead phase, with headbangable hair down to the middle of my back. Sadly, though, like many of the men in my family, it started to thin, then disappear. Studies show that by age 50, approximately half of men and women will experience hair loss. Why do some lose their hair and others don’t? How can…

Tomato ketchup is one of the world’s most popular condiments, but is this common tomato product a healthy choice? Most of what you’ll read on ketchup will be overly negative, but the truth is somewhat more nuanced. Key Points on Ketchup An underestimated source of lycopene: Tomato ketchup is one of the best dietary sources of lycopene, an interesting carotenoid that may have several benefits for human health. High in sugar and salt: Most ketchup contains a fair amount of added sugar and salt, making it a common dietary source of sugar and sodium. Hedonistic potential: While ketchup is relatively…

ASN offers evidence-based nutrition education resources for health care providers Rockville, MD (September 3, 2025) – The American Society for Nutrition (ASN) supports the U.S. Department of Health and Human Services (HHS) August 27 call for the nation’s medical schools and training programs to add comprehensive nutrition education across all stages of physician training, from premedical education through continuing certification. With largely preventable diet-related diseases among the top causes of death and economic burden in the U.S., integrating nutrition into medical training is essential to preparing future clinicians and reversing these trends. As the leading scientific society focused on nutrition…

If you’ve heard of billionaire Bryan Johnson, you’ve likely encountered the phrase “bio age testing.” Johnson, the subject of the Netflix documentary Don’t Die, says he’s on a quest to achieve the lowest possible “biological age” (also known as bio age). He reportedly spends millions each year on anti-aging treatments—dozens of daily supplements, weekly acid peels for his skin, injections to boost collagen production, hyperbaric oxygen therapy, and plasma infusions extracted from his 17-year-old son’s body. To determine what’s working, Johnson has undergone numerous tests to assess his bio age. Johnson says these tests show his age is now 5.1…

The nutrition community is made up of individuals with diverse experiences, perspectives, and ideas. This diversity is the fundamental strength of our professional society. Through this member spotlight series, we celebrate our diversity and the vast achievements made by our members in the field. Meet Dr. Christos Katsanos, Associate Professor at Arizona State University, Adjunct Faculty at Mayo Clinic in Arizona, and an ASN member for 18 years. In a conversation with ASN’s Member Engagement Coordinator, Sara Genell, he reflects on what sparked his interest in exercise physiology, the vital role nutrition science has played in his career, and his active…

Many people with IBS would trade 10 to 15 years of life expectancy for an instant cure for their condition. This is according to the results of a study of nearly 2,000 people with irritable bowel syndrome (IBS).1 In other research, people with IBS said they would take a medicine that carried a one percent risk of sudden death if it would cure their symptoms2—which can include urgent bouts of diarrhea, gas, or persistent constipation. Some people with IBS experience bouts of abdominal pain they describe as worse than childbirth. These flare-ups can siphon concentration, interrupt sleep, and destroy work…

Hormone-Related Approaches To Slow Aging, Improve Vitality, And Maintain Energy Levels