Tag: Yellow marrow

By adulthood, approximately half of a person's total bone marrow is composed of yellow marrow, which consists predominantly of fat cells. While this may lead to the perception that bone marrow is mainly fat, the reality is more nuanced and depends on the specific type of marrow and the individual's age.

According to the Society for Endocrinology, by the time we reach adulthood, bone marrow can comprise up to 70% of the bone marrow cavity's volume, making it the third-largest fat depot in the body. This surprising fact highlights that bone marrow is not merely a blood cell factory, but a critical and dynamic site of fat storage and metabolic activity.

Bone marrow fat, or adipose tissue, can account for up to 70% of an adult's bone marrow volume, an increase driven by age and metabolic factors. Far from being inert filler, this fat is a dynamic, metabolically active organ with crucial roles in energy storage and systemic regulation. Understanding why bone marrow is so fatty is key to grasping its integral functions beyond blood cell production.

In adults, bone marrow fat can account for up to 70% of the bone marrow's volume, making it a significant portion of the body's total fat stores. This fact challenges the perception of marrow as solely a blood-producing factory and raises the question: is bone marrow universally and very fatty?

According to a study published in the journal *Food Chemistry*, the fat content in long bone marrow can be as high as 96.9% of its fresh weight. This surprising fact reveals that yes, the inside of a bone does have a lot of fat, specifically within the soft tissue known as bone marrow.

Did you know that as a human ages, much of the body's red marrow is gradually replaced by yellow marrow? For those exploring nutrient-dense foods, understanding the distinct compositions and benefits of each type is crucial for answering the question: **What's better to eat, red marrow or yellow marrow?**