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Diabetologia 58 (4), 799808

Benefits of B12 for Older Adults B12 has a number of benefits for overall health in older adults: Boosts energy and reduces fatigue Prevents memory loss and reduces the risk of dementia and Alzheimers Improves mood and reduces depression and anxiety Reduces the risk of heart and arterial disease Normalizes cholesterol levels Promotes healthy skin, hair and nails Fosters a healthy gut biome to improve digestion Supports DNA synthesis and mitochondrial function Helps prevent cancer, including cervical, prostate and colon cancers Supports red blood cell production and prevents anemia

It does not affect the nervous system in ways that produce anxiety or sleep problems

Dosing tiers: Morning dosing maximizes synergy with daytime physical activity

High-dose oral supplements and intravenous B12 are used to treat severe deficiency cases because these methods help people who struggle with gut absorption issues