Is it normal for a 2 year old baby to have a big belly?

It is abnormal for a 2-year-old baby to have a big belly. It may be due to abdominal distension, which is mainly caused by constipation, which prevents waste from being excreted from the body. It may also be caused by a parasitic fetus in the body. It is recommended that mothers should understand the causes of a 2-year-old baby's big belly, and then choose treatment methods based on the causes to reduce the baby's harm.

The baby's belly is so big, not because he is fat or eats too much, but because he carries a parasitic fetus in his body. This parasitic fetus will grow bigger and bigger, not only will it rob the baby of nutrients in the body, but it will also endanger the baby's life over time!

Parasitic fetus is a rare congenital disease, also known as "fetus within a fetus" in genetics. The incidence rate is one in 500,000. It refers to a part of the complete fetus parasitizing another or several incomplete fetuses. Parasitic fetus is extremely rare in China because its common sites of occurrence are the retroperitoneum and abdominal cavity, and it manifests as a gradually enlarging abdominal mass. Newborns who are boarded often have a significantly larger belly than other children, but they don’t eat much, and sometimes they don’t want to eat or sleep.

Causes

Parasitic cranial twins are divided into true twins and false twins. When a mother releases two eggs at one time and they develop into two fetuses after fertilization, they are called true twins; when one egg cell is fertilized and develops into two fetuses, it is also called true twins. Generally, parasitic twins occur in true twin embryos, which are caused by the inner cell mass of the embryo splitting into two groups of cells to form two developmental centers. If the cell masses of the two inner cell masses are the same size and remain normal, they will develop into twins; if the two cell masses are one large and one small, and the smaller one is poorly developed, it may be included in the body of a fetus developed by the other inner cell mass, becoming an entrapped parasitic fetus, also known as a "fetus in a fetus." Therefore, the parasitic twin and the host are twin brothers or sisters.

Talking about this parasitic fetus, genetic experts believe that more than 20% of women will have two or more fetuses after conception, but when the fetus develops to 4 to 5 months, only one is left. Obstetricians and gynecologists often encounter such situations. Many women are told that they are pregnant with twins during X-ray or ultrasound examinations, but only one fetus is found during delivery. There are two reasons for this phenomenon. One is that the fetuses do not implant properly, and except for one fetus that takes root, the rest are absorbed by the mother in some way. The other is the "fratricide" phenomenon, in which a strong fetus absorbs or curbs the development of another or several weak fetuses in order to compete for maternal nutrients, or absorbs the embryo of its twin brother and wraps it in its own body. This is a parasitic fetus, which may be the result of "fighting within the same family and harming each other too much".

Since the parasitic twin formed by "missing twin syndrome" is wrapped in a connective tissue, its development is extremely incomplete. They slowly grow larger as the parasite develops, and most can grow to a size ranging from 200 to 600 grams, with the largest reaching 2,600 grams. The survival period of a parasitic fetus can be long as the age of the host increases, up to 30 to 40 years, but in most cases the host will show discomfort symptoms when it is young and the parasitic fetus must be removed surgically.