OverviewWhat is bone marrow?

Bone marrow is the soft, fatty tissue inside of bone cavities. Components of your blood including red and white blood cells and platelets form inside of your bone marrow.

Bone marrow makes nearly all the components of your blood. It's responsible for creating billions of red blood cells daily, along with white blood cells and platelets. Bone marrow also stores fat that turns into energy as needed.

Bone marrow makes the components of your blood that you need to survive. Bone marrow produces red blood cells that carry oxygen, white blood cells that prevent infection and platelets that control bleeding. The absence of bone marrow can be fatal since it's an essential part of your body.

Yes, bone marrow and the healthy cells it produces are necessary for humans to live. Often, cell mutations harm healthy bone marrow cells, and a bone marrow transplant would be a treatment option for people diagnosed with blood cancers like leukemia.

A bone marrow transplant takes healthy cells from a donor and puts them into your bloodstream. The donors cells help your body grow healthy red and white blood cells and platelets.

There are three parts to the anatomy of your bones: compact bone, spongy bone and bone marrow. Compact bone is the strong, outer layer of your bones. Spongy bone makes up the ends of your bones. Bone marrow is in the center of most bones and in the end of spongy bones in your body. Bone marrow and blood vessels fill cavities in your bones, where they store fat and stem cells and produce blood cells that make your whole blood.

Bone marrow is a spongy, soft tissue that resembles a jelly or jam that you would spread on toast. It comes in two colors, red and yellow. Bone marrow fills the cavities of your bones and holds cells that create red and white blood cells and platelets, which make whole blood. The color of red bone marrow is the result of red blood cell production.

There are two types of bone marrow in your body, which are characterized by their color. Your body holds just under 6 lbs. (about 2.5 kg.) of red and yellow bone marrow.

Red bone marrow makes up all of your bone marrow until about age seven. Yellow bone marrow gradually replaces red bone marrow as you age.

Bone marrow is made of stem cells. These stem cells make red bone marrow, which creates blood cells and platelets for your blood. Yellow bone marrow consists mostly of fat and stem cells that produce bone and cartilage in your body.

Directly targeting bone marrow is leukemia, which is a blood and bone marrow cancer. Leukemia forms when a cell mutation occurs in your bone marrow and mutated cells multiply out of control, reducing the production of healthy, normal cells.

Since bone marrow is the foundation for the creation of blood cells, blood-related conditions often are the result of abnormally functioning bone marrow. These conditions include:

Common symptoms of bone marrow conditions include:

There are two tests to check the health of your bone marrow and/or blood cells:

For a bone marrow test or donation, youll receive an anesthetic, so you won't feel any pain during the procedure. After the procedure, you may feel side effects, which include aches and pain at the site of the incision. Each individual experiences pain differently, so the severity could vary from person to person. The pain may last for a few days or up to several weeks.

Treatments for bone marrow conditions vary based on the severity and progress of the diagnosis. Treatment options include:

Bone marrow is the foundation of your bones, blood and muscles. Keeping your bone marrow healthy focuses on supporting components of your body that grow from bone marrow cells. You can keep your bone marrow healthy by:

A note from Cleveland Clinic

Bone marrow is the soft center of the bones in your body. Bone marrow is necessary to create components of your blood and store fat. The best way to keep your bone marrow healthy is to support the parts of your body that your bone marrow produces, like your blood, muscles and bones.

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Bone Marrow: What it is & Why it is Important - Cleveland Clinic