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### Get tested If your healthcare provider suspects a vitamin B12 deficiency, theyll likely suggest a blood test to examine: - Your levels of B12 and other essential nutrients - Common markers for vitamin deficiencies - Your complete blood count (CBC) If you decide to proceed with testing, you can make an in-person appointment with a nearby testing facility

or fatigability in adulthood (34, 35)

Clinical evidence Second Nature Second Nature has published programme-specific outcomes in peer-reviewed journals

Sometimes its changing a toothpaste

Plant-based eaters can become deficient over time, so supplementation (oral or injected) may be needed