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Shortness of Breath B12 deficiency anemia can cause a person to feel short of breath

Last reviewed: May 14, 2026 Last updated: May 14, 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

How often shots are needed depends on how bad the deficiency is and how well the patient responds to treatment

Measure Accurately: Always measure your dose with a high degree of precision

Longevity and metabolic health clinics offer B-12 injections as part of age-optimisation and energy-support programs

Reduces Fatigue and Weakness 7