Which part of the human body ages first?

The human body is made up of many parts. I believe everyone has some understanding of this, but which part of the human body ages first? Many people don’t know. Of course, everyone has a different answer. We all know that with the increase of age, various organs of the human body will begin to age, which makes us begin to become ugly. Today we will study which part ages first. Relevant people say that the thymus of the human body ages first. Let’s take a look at the detailed introduction below.

The thymus is an important lymphatic organ in the body. Its function is closely related to immunity, and it is the place where T cells differentiate, develop, and mature. It can also secrete thymus hormones and hormone-like substances, and is an organ with endocrine function. Located in the anterior mediastinum of the chest. In the late embryonic period and at birth, the human thymus weighs about 10 to 15 grams, which is the period when it is relatively heaviest in life. As age increases, the thymus continues to develop, reaching about 30 to 40 grams by puberty. After that, the thymus gradually degenerates, the lymphocytes decrease, and the adipose tissue increases, reaching only 15 grams in old age.

The thymus is an important immune organ. Many immune cells develop and mature in the thymus. However, the thymus is also the first organ in the body to age. The latest data shows that the thymus begins to decline from birth, and by the age of 18, most of its functions have been lost. After the thymus declines, the body's lymphocytes begin to perform immune tasks independently, and a group of cells with longer lifespans (also known as long-lived lymphocytes) replace the thymus. Unfortunately, these cells only live for 30 years. When people approach middle age, these cells begin to die naturally one after another, which is medically called apoptosis, and the original meaning of the English word is suicide. At this time, our immune function also enters a period of decline.

There are many parts of the human body, and everyone may know about each part, but they do not have a particularly good understanding of the specific knowledge of each part, especially which part of the human body ages first. The above is a detailed introduction to this issue. I hope you have understood it after reading it. Therefore, you need to protect the thymus well in daily life.