NEW YORK, May 23 (UPI) -- It may not be the mythical fountain of youth, but the strength of the body's immune system could hold the key to a healthy, long life, experts told UPI. The concept of so-called "immune resilience" has gained traction in recent years, particularly since the COVID-19 pandemic, which heightened awareness of the importance of a strong immune system, according to geriatrician Dr. George Kuchel, director of the Center on Aging at the University of Connecticut. A resilient

Tag-uri: Coronavirus