Health Hotline Magazine | March 2026

By Liz Mueller You are what you eat. We all know that phrase, and sometimes it feels like a “told you so,” but what if I told you that what you eat today, specifically the type of carbs you eat, really does influence how well you age and can boost your mood? Emerging science suggests exactly that: A study published in 2025 shows that the quality of the carbs you eat in midlife increases your odds of aging with strong physical health, sharp cognition, and overall wellbeing . The keyword is quality. We’re not talking about any old carbs—we’re specifically referring to vegetables—non-starchy ones are the most powerful, followed by fruits, legumes, and whole grains. Could Quality Carbs be the Key to Healthy �ging?

Veggies are naturally high in fiber, which is key for stabilizing blood sugar, supporting metabolic health, and feeding beneficial gut bacteria. A recent study on patients with type-2 diabetes found that switching to a high-fiber diet improved gut microbiota-boosting species like Lactobacillus , Bifidobacterium , and Akkermansia, while reducing opportunistic pathogens. Fill your plate with fiber-rich vegetables—like leafy greens (spinach, kale, collards, Swiss chard), cruciferous veggies (broccoli, cauliflower, Brussels sprouts, cabbage), peppers, zucchini, asparagus, green beans, carrots, and beets— to feed beneficial gut bacteria, stabilize blood sugar, and support overall metabolic health. Fiber for gut health and metabolic health 2

A large study published in 2025, including 47,513 women, found that consuming high-quality, high-fiber carbs in midlife predicted healthier aging, including lower risk of chronic diseases, cancer, type-2 diabetes, heart failure, and cognitive decline. In contrast, diets high in low-quality carbs significantly reduced the odds of staying healthy with age. The researchers defined high-quality carbs as vegetables (excluding potatoes), fruit (excluding fruit juice), whole grains, and legumes. Low-quality carbs were defined as refined grains, processed potatoes (e.g., potato chips), and added sugars. The researchers concluded that, “… intakes of high-quality carbohydrates and dietary fiber were associated with positive health status in older adulthood, suggesting that dietary carbohydrate quality may be an important determinant of healthy aging.” They also noted that dietary carbs account for about half of all energy intake in the average American diet, with the majority (42%) coming from refined carbohydrates, while very little (8%) comes from high-quality carbs, like vegetables. One thing is clear : 1 Quality carbs = healthspan hero We all need to eat more veggies— they are the holy grail of high-quality carbs.

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