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InsightHorizon Digest

Is a low white blood count serious

Author

Isabella Browning

Updated on April 19, 2026

The main risk of an abnormally low white blood cell count is how vulnerable it may make a person to infection. Without an adequate white blood cell response available to fight infection, the body is at greater risk that any infection (including those usually regarded as minor) may cause serious illness or death.

What is a dangerously low white blood cell count?

In general, an adult who has fewer than 1,000 neutrophils in a microliter of blood has neutropenia. If the neutrophil count is very low, fewer than 500 neutrophils in a microliter of blood, it is called severe neutropenia.

What are the symptoms of having low white blood cells?

  • Have repeated fevers and infections.
  • Get bladder infections that may make it painful to pass urine, or make you urinate more often.
  • Get lung infections that cause coughing and difficulty breathing.
  • Get mouth sores.
  • Get sinus infections and a stuffy nose.

What is the most common reason for low white blood cell count?

A low white blood cell count usually is caused by: Viral infections that temporarily disrupt the work of bone marrow. Certain disorders present at birth (congenital) that involve diminished bone marrow function. Cancer or other diseases that damage bone marrow.

Do low white blood cells make you tired?

Can low white blood cells cause fatigue? Low white bloods cells likely aren’t the cause of fatigue. If you have low WBC and are increasingly feeling fatigued, both are likely symptoms of an underlying issue.

What is the treatment for low white blood cell count?

Doctors treat a low white blood cell count using: Antibiotics to treat any infections. Medicines to push your body to make more white blood cells. Treatment for any diseases that may be causing the count to be low.

How do I raise my white blood cell count?

Eating Vitamin C will help regulate the levels of white blood cells in your body. Fruits like lemons, oranges, and lime are rich in vitamin C, and so are papayas, berries, guavas, and pineapples. You can also get vitamin C from vegetables such as cauliflower, broccoli, carrots, and bell peppers.

What cancers cause low WBC?

Low white blood cell count. Cancers that affect the blood and bone marrow can also lower the count. These types of cancers include leukemia, lymphoma, and multiple myeloma.

Is 3.2 WBC too low?

The normal range is usually between 4,000 and 11,000 white blood cells per microlitre of blood. Anything below 4,000 is typically considered to be a low white blood cell count.

Can stress cause low white cell count?

In addition, stress decreases the body’s lymphocytes — the white blood cells that help fight off infection. The lower your lymphocyte level, the more at risk you are for viruses, including the common cold and cold sores.

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How long does it take for white blood cells to increase?

At this point, you are most likely to develop an infection. Your neutrophil count then starts to rise again. This is because your bone marrow restarts normal production of neutrophils. But it may take 3 to 4 weeks to reach a normal level again.

Does exercise increase white blood cell count?

Exercise causes change in antibodies and white blood cells (WBC). WBCs are the body’s immune system cells that fight disease. These antibodies or WBCs circulate more rapidly, so they could detect illnesses earlier than they might have before.

Can vitamin D cause low WBC?

Vitamin D deficiency does not have significant effect on RBC count and indices, on WBC total and differential count, nor on BP and HR.

Can stress and anxiety cause low white blood count?

Well, if you’re a musician here in the Bay Area, no wonder you’re stressed! Yes, routine viral infections like common colds, etc, can temporarily depress your total white blood cell count. Too much stress and anxiety can do almost anything, but they are especially noteworthy for causing fatigue and malaise.

Is WBC low with Covid?

Low white blood cell counts have been found to contribute to severe disease and death in people with COVID. While you may not be able to prevent a low WBC count, you can take steps to prevent a COVID infection.

What can you eat to build up your white blood cells?

Foods high in protein, such as lean meats and poultry, are high in zinc — a mineral that increases the production of white blood cells and T-cells, which fight infection. Other great sources of zinc are oysters, nuts, fortified cereal, and beans.

Does walking increase white blood cells?

Walking briskly and regularly can also help protect you from getting a cold, the flu, or other immune-related illnesses. That’s because physical exercise like walking increases the amount of white blood cells circulating in your blood. These cells fight infection and other diseases as part of the body’s immune system.

Does vitamin B12 help white blood cells?

In the present study, B12 supplementation did not affect white blood cells as well as lymphocytes subpopulations (number and percentage) in the control group (both after 30 and 90 days). A 30-day period of B12 addition in the protein-deficient group reduced the negative effect of malnutrition.

What vitamins cause low white blood cell count?

  • vitamin B12.
  • folate.
  • copper.
  • zinc.

Can supplements lower white blood cell count?

Answer: There are no supplements or specific foods known to increase white blood cell counts. People often confuse iron supplementation with low white blood cell count. Iron supplementation is only appropriate with low RED blood cells.

What is an alarming white blood cell count?

In general, for adults a count of more than 11,000 white blood cells (leukocytes) in a microliter of blood is considered a high white blood cell count.

Does white blood count decrease with age?

Total white blood cells (WBCs) decrease slightly in the elderly. In response to an acute infection, the number of WBCs increases and in sepsis, the increase is very dramatic.