Feeling Tired and Foggy? Doctors Say It Might Be a Vitamin Deficiency, Not Aging

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Fatigue, memory lapses and muscle weakness are easy to write off as part of getting older, especially for those of us who have been here a while. But Dr. Rhea Rogers says low levels of vitamin B12, vitamin D and magnesium are common in older adults, and the symptoms can look exactly like aging. Her words are blunt: vitamins can steal your vitality.

Testing isn’t as simple as it sounds. Rogers notes that standard blood tests fluctuate daily and don’t reveal whether receptors, transport or tissue are functioning properly. That’s why she favors personalized testing guided by a physician, particularly for anyone taking prescription medications where interactions are a real concern. Aging experts including Katherine Ambrose, Amy O’Rourke and Sam Cradduck recommend starting with a balanced, low-processed diet before reaching for a bottle, and choosing third-party tested supplements without unnecessary fillers if you do.

For Suncoast listeners, the takeaway is practical. Bring a few questions to your next appointment. Ask about B12, D and magnesium. Ask whether your medications could be interfering. And ask whether your diet is doing the work. Your energy and your memory are worth the conversation. Have you ever asked your doctor about vitamin levels, or do you assume it’s just aging?