See a doctor promptly to find and treat the cause
Review all medications with a clinician
Treat any infection immediately
Get enough sleep every night
Eat enough calories and protein
Increase intake of vitamin B12-rich foods
Increase intake of folate-rich foods
Increase intake of zinc-rich foods
Increase intake of copper-rich foods
Correct iron deficiency if present
Stay well hydrated
Avoid alcohol
Stop smoking
Reduce stress
Practice good hygiene to prevent infections
Avoid raw or undercooked foods if immunocompromised
Avoid exposure to sick people
Ask about white blood cell–boosting treatments if needed
Follow prescribed treatment for bone marrow or autoimmune causes
Recheck blood counts as directed by a clinician