The amount of vitamin B12 you may need each day will vary depending on your age
Vitamin B12 plays a critical role in supporting red blood cell formation, neurological health, and DNA synthesisdeficiencies can lead to fatigue, mood changes, and cognitive decline
B12 injections may also be useful for those with gastrointestinal issues, older adults, vegans, vegetarians, and people with underlying health conditions that can restrict vitamin B12 absorption
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Another study published in the Journal of the American Geriatrics Society found that B12 supplements improved memory and cognitive function in older adults with mild cognitive impairment
Symptoms of a B12 Deficiency Initially, the symptoms of B12 deficiency can be difficult to notice