side effects of having b12 injections Injection Safety, & Risks Managing B12 Lipo Injection Side

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Vitamin B12 deficiency can cause pernicious anemia, fatigue, and nerve damage

Last reviewed: June 5, 2026 Last updated: June 5, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

Step 2: Provider Review A licensed provider evaluates your information to determine whether this program is appropriate for you

Of course, older adults, people over age 50 in particular, tend to have the lowest B12 levels, though vegetarians and those who have undergone gastric bypass surgery are also at a higher risk