Health Hotline Magazine | April 2026

Protein produces acidic byproducts during metabolism. Diets high in these foods raise dietary acid load, typically measured by Potential Renal Acid Load (PRAL). The body carefully maintains pH balance with bu ering minerals such as calcium, magnesium, and potassium, but when these minerals are insu cient, particularly when vegetable intake is low, the body may leach calcium from bone to compensate, weakening them over time. Additionally, diets very high in protein may impair kidney function over time, especially in those already experiencing kidney dysfunction or disease. The answer? Eat more veggies! A recent systematic review and meta analysis found that people who ate five or more servings of vegetables and fruit per day—a diet pattern that lowers PRAL scores—had a significantly lower risk of hip fractures, which are linked to loss of independence, reduced mobility, and even higher mortality, compared with those who ate few vegetables and fruits, supporting the idea that vegetables and fruits, which are alkalizing, help protect bone health. Dietary patterns that include adequate—but not excessive— protein and su cient vegetables and fruit are also associated with improved kidney outcomes and slower decline in kidney function, particularly in aging populations and those at risk for chronic kidney disease. The Acid Load Issue: Why Balance Matters Protein is crucial for bone health because it builds the collagen matrix that gives bones their structure and allows minerals to be deposited; however, protein’s bone benefits depend on su cient intake of minerals, found largely in vegetables and fruits. Non-starchy vegetables are especially rich in minerals and contain alkalizing compounds that help neutralize dietary acid, supporting both bone and kidney health. Leafy greens, cruciferous vegetables, and colorful produce also provide fiber, antioxidants, and phytonutrients that support overall health. Research shows that diets higher in fruits and vegetables are associated with lower PRAL scores and more favorable markers of mineral balance, even when protein intake is relatively high, and a recent study showed that diets rich in high-quality carbohydrates—particularly vegetables—are associated with lower risk of cardiovascular disease, type-2 diabetes, cancer, cognitive decline, and all-cause mortality. Fiber-rich diets that are high in vegetables and fruits also support the production of short-chain fatty acids that regulate inflammation, insulin sensitivity, and bone metabolism. Recent systematic reviews indicate that higher protein intake is associated with neutral or beneficial bone outcomes when mineral and vegetable intake are su cient, but may be less favorable when fruits and vegetables are lacking. In fact, populations with lower fracture risk tend to consume both adequate protein and abundant vegetables—underscoring the importance of a balanced diet. Bridging Protein and Vegetables

Rethinking the Plate

Instead of building meals around protein alone, support a balanced approach: • Fill at least half of your plate with non-starchy vegetables • Include moderate portions of high-quality animal protein • Include healthy fats to support nutrient absorption and provide essential micronutrients

Protein is essential from conception to old age, but more is not always better. When protein intake increases without an abundant intake of vegetables, bone and kidney health may be compromised over time. The solution is simple and evidence-based: pair protein with plenty of vegetables to avoid the unintended trade-offs. The protein craze doesn’t need to disappear—it just needs more veggies. Protein powers your body, vegetables help it do its job safely.

For references, please visit naturalgrocers.com/issue-105

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