How white blood cells work
William Taylor
Published Apr 03, 2026
They flow through your bloodstream to fight viruses, bacteria, and other foreign invaders that threaten your health. When your body is in distress and a particular area is under attack, white blood cells rush in to help destroy the harmful substance and prevent illness.
How do white blood cells fight infection?
Your white blood cells lock on to the germs in order to absorb or destroy them. They have antibodies that latch onto the germs. Experience makes your immune system stronger. The first time your body comes into contact with a certain type of germ, your immune response may take a while.
How are white blood cells made?
Stem cells in the bone marrow are responsible for producing white blood cells. The bone marrow then stores an estimated 80–90% of white blood cells. When an infection or inflammatory condition occurs, the body releases white blood cells to help fight the infection.
How do white blood cells eat germs?
The white blood cell is attracted to the bacteria because proteins called antibodies have marked the bacteria for destruction. These antibodies are specific for disease-causing bacteria and viruses. When the white blood cell catches the bacteria it goes about “eating” it in a process called phagocytosis.What happen if white blood cells are high?
White blood cells are vital components of the blood. Their role is to fight infection, and they are essential for health and well-being. A high white blood cell count may indicate that the immune system is working to destroy an infection. It may also be a sign of physical or emotional stress.
What are signs of strong immune system?
Signs of a strong immune system include patients eating right, maintaining a healthy lifestyle and getting enough sleep. Health care experts in the wellness field are scrambling to keep patients well during a hard-hitting flu season and additional worries about a new coronavirus.
What cells fight viruses?
Cytotoxic effector cells that can destroy virus-infected cells include cytotoxic T cells, natural killer cells, and activated macrophages. Cytotoxic T lymphocytes can recognize and destroy virus-infected (more…)
What are the 7 types of blood cells?
- red blood cells (RBCs) or erythrocytes.
- platelets or thrombocytes.
- five kinds of white blood cells (WBCs) or leukocytes. Three kinds of granulocytes. neutrophils. eosinophils. basophils. Two kinds of leukocytes without granules in their cytoplasm.
How can you increase your white blood cells?
Most people turn straight to vitamin C after they’ve caught a cold. That’s because it helps build up your immune system. Vitamin C is thought to increase the production of white blood cells, which are key to fighting infections. Almost all citrus fruits are high in vitamin C.
How can I protect my white blood cells?- Practice good hygiene. …
- Be careful around pets and other animals that might transmit infections.
- Make sure foods are thoroughly cooked before eating them.
- Stay away from people who have infections.
- Practice safe sex; avoid drugs and sharing needles.
What organ produces white blood cells?
A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue. White blood cells are part of the body’s immune system.
How can I increase my white blood cells naturally?
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.
Can you live without white blood cells?
If you had no white cells, you would get lots of very serious infections. White blood cells can find germs that enter your body and destroy them, which keeps them from making you sick. Some white blood cells make antibodies, which are special molecules that can stick to germs and make them harmless.
What is normal white blood cell count?
The normal number of WBCs in the blood is 4,500 to 11,000 WBCs per microliter (4.5 to 11.0 × 109/L). Normal value ranges may vary slightly among different labs.
What causes low white blood cells?
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.
What is a natural virus killer?
Herbs have been used as natural remedies since ancient times. Common kitchen herbs, such as basil, sage, and oregano, as well as lesser-known herbs like astragalus and sambucus, have powerful antiviral effects against numerous viruses that cause infections in humans.
Who has the strongest immune system?
Research has repeatedly shown that women have a stronger immune response to infections than men. Studies from as early as the 1940s have elucidated that women possess an enhanced capability of producing antibodies.
Can a strong immune system fight Covid?
It’s important to know that a strong immune system will not prevent you from contracting COVID-19. SARS-CoV-2, the virus that causes COVID-19, is a novel pathogen, meaning those who contract it have no existing antibodies to mount a defense.
What are 5 signs of a weak immune system?
Signs of a weak immune system include frequent cold, infections, digestive problems, delayed wound healing, skin infections, fatigue, organ problem, delayed growth, a blood disorder, and autoimmune diseases. The immune system helps protect the body from harmful pathogens and other environmental risks.
What age is your immune system strong?
The immune system consists of a team of cells, proteins, tissues and organs that fight off illness, germs and other invaders. When an unsafe substance enters the body, the immune system kicks into gear and attacks. Children do not have fully developed immune systems until they are about 7-8 years old.
What causes a weak immune system?
While a weaker immune system is typically caused by certain diseases, malnutrition, and certain genetic disorders, it can also temporarily be caused by medications such as anticancer drugs and radiation therapy. Your immune system can also be temporarily weakened by a stem cell or organ transplant.
Does garlic increase white blood cells?
Also, a higher dose of 200mg/day garlic given for a longer period was observed to cause a significant increase in total white blood cell (TWBC). These data therefore support the earlier reports by Sumiyoshi (1997) that garlic extracts stimulate immune functions.
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.
What are 5 ways to boost your immune system?
- Don’t smoke.
- Eat a diet high in fruits and vegetables.
- Exercise regularly.
- Maintain a healthy weight.
- If you drink alcohol, drink only in moderation.
- Get adequate sleep.
- Take steps to avoid infection, such as washing your hands frequently and cooking meats thoroughly.
What are the 3 types of blood?
- Platelets help the blood to clot. Clotting stops the blood from flowing out of the body when a vein or artery is broken. …
- Red blood cells carry oxygen. …
- White blood cells ward off infection.
Why is the blood red?
Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts. Each RBC lives for about 4 months.
Where are platelets made?
Platelets, or thrombocytes, are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding. Platelets are made in our bone marrow, the sponge-like tissue inside our bones. Bone marrow contains stem cells that develop into red blood cells, white blood cells, and platelets.
Which drugs increase white blood cells?
Drugs that may increase WBC counts include epinephrine, allopurinol, aspirin, chloroform, heparin, quinine, corticosteroids, and triamterene.
How long does it take for white blood cell count to return to normal?
The white blood cell count will typically return to normal around four-weeks after delivery.
Does the femur make blood cells?
Most blood cells are made in your bone marrow. This process is called haemopoiesis. In children, haemopoiesis takes place in the long bones, like the thighbone (femur). In adults, it’s mostly in the spine (vertebrae) and hips, ribs, skull and breastbone (sternum).
Where are WBC destroyed?
WBCs are produced in the bone marrow and destroyed in the spleen and liver.