A Blueprint for Aging, Featuring Charlie Munger and My Brother-in-Law David Usdan
Clint Eastwood famously said, “I get up every day, and I don’t let the old man in.” That’s my philosophy too, giving my all to dodge growing old. In today’s post, I’m spotlighting two role models for this sentiment: Charlie Munger (Warren Buffett’s sidekick who died just weeks before his 100th birthday) and my brother-in-law Dr. David Usdan. In exploring their similar approach to fighting off aging, I discovered some remarkable parallels.
Both Charlie and David are role models for staying active and engaged in their senior years. In “The Untold Story of Charlie Munger’s Final Years,” Gregory Zuckerman reveals Munger’s prescription for longevity (Wall Street Journal, Nov. 29, 2025). Charlie’s example is “a blueprint for how to age with grace, equanimity and purpose. ‘To the day he died, that mind was running,’ says Munger’s stepson, Hal Borthwick. ‘He never stopped learning.’” Munger, as Berkshire-Hathaway Vice Chairman, was Buffett’s sounding board. The two shared weekly calls, and when hearing each other became difficult, “‘they would scream to each other.’” Their ears may have declined, but their regular phone banter challenged their intellect and kept their minds sharp as ever.
Similarly, my brother-in-law David keeps his mind working non-stop. Now 84, David just recently closed his ophthalmology practice, but he still “works” almost every day. David now volunteers at the University of Tennessee College of Medicine and at the Memphis Church Health Center. He continues to heal those suffering with eye disease, while training young doctors with his high standards for medical care. David has no interest in a traditional stay-at-home retirement. As he told Aisling Maki of the Daily Memphian, “‘I’ve worked since I was a teenager. I’m very bored being at home. I don’t know what I would do if I had nothing to do.’” (“Tips for Living a Long, Full Life from Two Octogenarian Doctors,” Dec. 3, 2025.)
By staying active using his medical skills to heal and train others, my brother-in-law is achieving an important element of a successful retirement—David continues to feel like he matters. Jennifer Wallace addresses the importance of feeling like you matter in her new book, Mattering: The Secret to a Life of Deep Connection and Purpose. Many retirees struggle finding ways to contribute. But “it wasn’t just disappointment in a lack of opportunities. It was an erosion in something far more fundamental—their sense of mattering, the deep human need to feel value and to have a chance to add value to the world.” (“The Retirement Crisis No One Warns You About: Mattering,” Wall Street Journal, January 17, 2026.)
Charlie and David both lost their wives in their later years, but set their intentions on filling the void. When Munger’s wife died, he “feared loneliness and irrelevance. He chose to spend more time with friends, buoying his spirits.” Charlie met with a weekly breakfast group where they “told stories and shared philosophies.” Likewise, when David lost Linda (sister of my wife Laurie), it left a big gap in his life. She was his full-time companion, working by his side every minute of the day, running his medical practice. Like Charlie, David connects with a group of longtime friends as his breakfast cronies. But both advocate for making new friends. Per Munger, “At my age, you make new friends, or you don’t have any friends.” Similarly, David recently took up croquet. “‘It was a good chance to meet some people. I hadn’t thought about the sport since I was a child, and I didn’t know people still play it.’”
David enjoys time outdoors and stays fit by taking two-mile walks. He’s also busy with traveling, reading, and lots of hobbies. David is a science nerd who loves fiddling with electronics. He’s even a longtime ham radio operator. He also loves cars. David recently went out one day and came home with a new 5-series BMW electric car (one driver, four cars—two of which are electric). He told my wife Laurie, “Everyone needs two electric cars in case one doesn’t work.”
Charlie and David also share some unconventional eating habits for elderly stomachs. Neither ascribes to a bland diet. “For years, Munger’s family tried keeping him on a healthy diet. He resisted the effort. ‘He sipped water like it was poison…. His last delivery was Korean fried chicken…. He loved Costco hot dogs. In the hospital, one of the last meals he had was an In-N-Out burger and a Diet Coke.’” I witnessed Charlie’s eating habits firsthand. Our family, including David and Linda, took annual pilgrimages to the Berkshire-Hathaway Annual Meeting, where Charlie would sit all day answering questions while drinking sodas and munching on peanut brittle. David was a big fan of Munger’s sharp wit and wisdom, but he likely also related to Charlie’s eating habits. David also eats like a kid. His daughter (my niece Lisa) has him for dinner every night, trying her best to get him on a healthier diet. Per David, “‘I eat healthy over there because she’s an endocrinologist. She doesn’t always agree with my choice of food, but I always eat her food. She’s very big into vegetables,’” though David describes himself as a “‘meat-and-potatoes’” guy. He once asked me if I eat yellow pasta, because (to his dismay), the pasta Lisa serves him is always green.
I am paying close attention to the habits of these two gentlemen. They set examples for staying active, keeping closely connected with friends and loved ones, and “rewiring” rather than “retiring.” With their curious minds and positive attitudes, people are drawn to them and want to be around them. And on top of all that, they even eat whatever they want. It’s hard to argue with their food choice, given their longevity. As I head now for a lunch of salad and grilled salmon, I’m starting to rethink it. To paraphrase from the movie “When Harry Met Sally,” maybe I should “have what they’re having.” How about a hot dog, a burger, or some fried chicken?
Marvin E. Blum

Marvin Blum (third from right) is joined by family at a Berkshire-Hathaway Annual Meeting, including brother-in-law, David Usdan (far right), standing below a caricature of Vice Chairman Charlie Munger. David and Charlie are role models for aging.

David Usdan (center) and Marvin Blum (far right) with family, attending another Berkshire-Hathaway Annual Meeting to absorb wisdom from Warren Buffett and Charlie Munger.

Receiving an 84th birthday hug from granddaughter Paige is “Papa” David Usdan.
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