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Week 26 Of Pregnancy: Baby’s Blood Formation

As expectant parents eagerly await the arrival of their little bundle of joy, they continue to experience wonder and anticipation throughout the pregnancy journey. Week 26 of pregnancy marks a significant milestone in the development of your baby. In this article, we will look into the remarkable process of a baby’s blood formation and explore other fascinating developments during this stage of pregnancy. From the baby’s eyes open to the emergence of white blood cells and the growth of the lungs, let us embark on this incredible journey together.

By week 26 of pregnancy, the complex process of blood production begins to take place inside the growing body of your unborn child. Your baby’s bone marrow now serves as the main source for the production of red blood cells. So, now it is no longer completely dependent on the yolk sac or liver. These cells are essential for providing oxygen, which is necessary for every organ and tissue to grow and develop. Understanding the significance of this week as you approach the third trimester provides insight into the beautiful complexities of fetal development. It also emphasises the wonder of life that is steadily preparing to make its appearance.

1. Baby’s Eyes Begin to Open and Close

a.One of the most beautiful aspects of fetal development is the emergence of sensory abilities. Around Week 26, you may notice your baby’s eyes opening and closing. These tiny fluttering movements show that your baby is slowly preparing to experience the world outside the womb.

Week 26 Of Pregnancy

b.As the optic nerves and eye muscles develop, the baby’s eyes can blink and even respond to light. While the eyelids are often fused shut earlier in pregnancy, they now become more active, allowing the baby to practice blinking. This newfound skill is not only adorable but also crucial for the baby’s visual development once they are born.

2. The Baby Starts to Produce White Blood Cells

a.As your baby’s physical appearance evolves, so do its internal systems. One of the remarkable developments occurring in Week 26 is the production of white blood cells. These cells are important to the baby’s immune system, helping them fight infections and illnesses.

Baby's growth

b.The white blood cell formation process, known as hematopoiesis, begins in the fetal liver and eventually shifts to the bone marrow. The production of white blood cells is a complex and highly regulated process that ensures the baby is equipped with the necessary immune defences upon birth.

c.During this stage of pregnancy, the baby’s white blood cell count is relatively low compared to an adult’s, but it gradually increases as they continue to develop. The slow increase in white blood cells helps the baby get ready for a healthy start in the outside world, where they will come across different germs.

3. Development of the Baby’s Lungs Continues

a. Another significant milestone during Week 26 of pregnancy is the continued development of the baby’s lungs. The respiratory system is one of the last to fully mature in utero, but by this point, your baby’s lungs have come a long way.

Week 26 Of Pregnancy

b.The tiny air sacs in the lungs, known as alveoli, are crucial for proper breathing. In Week 26 of pregnancy, these alveoli begin to form the complex network that will help in the exchange of oxygen and carbon dioxide after birth. While the baby still receives oxygen through the umbilical cord, these developments are vital for survival outside the womb.

c.Additionally, the baby’s lungs produce surfactant during this time.. Surfactant helps to reduce surface tension in the alveoli, preventing them from collapsing when the baby takes their first breath. This essential substance is key to ensuring that the baby can breathe independently after birth.

4. The Role of Iron in Baby’s Blood Formation

a.Now that we have explored the amazing developments of Week 26, it is crucial to highlight the role of iron in the process of a baby’s blood formation. Iron is an important mineral that is essential in ensuring the baby’s blood is healthy and functioning optimally.

Week 26 Of Pregnancy

b.Iron is a key component of haemoglobin, the protein in red blood cells responsible for transporting oxygen throughout the body. During pregnancy, the demand for iron increases as the mother’s body supplies her and the growing baby’s needs. Adequate iron intake is essential to prevent anaemia in both the mother and baby.

c.To support your baby’s blood formation, it is essential to maintain a balanced diet that includes iron-rich foods like lean meats, beans, lentils, spinach, and fortified cereals. Your doctor may also recommend iron supplements to ensure you and your baby receive the necessary iron levels for a healthy pregnancy.

5. Monitoring Your Baby’s Development

a.During this pregnancy stage, staying in close contact with your doctor is essential. Regular prenatal check-ups and ultrasounds will allow your healthcare team to closely monitor your baby’s development. They can assess the baby’s growth, check the functioning of vital organs, and provide guidance on maintaining a healthy pregnancy.


b.In addition to medical care, consider keeping a journal or creating a pregnancy scrapbook. Documenting your experiences and the milestones you observe can be a beautiful way to cherish these moments. For instance, capturing the baby’s eyes opening and closing can create lasting memories. This will also help you bond with your baby even before they arrive.

As you reach Week 26 of your pregnancy, the wonder of life’s creation unfolds. The baby’s eye movements, the production of white blood cells, and the development of lungs are just a few of the processes in your growing child.

Remember to nurture your and your baby’s health through a balanced diet, regular prenatal care, and the support of your doctor. As you prepare for the arrival of your little one, savour each moment of this extraordinary journey. Every passing week brings new wonders and brings you one step closer to meeting your precious baby.

This article is approved by Dr Rujul Jhaveri, Consultant Gynaecologist at NH-SRCC Children’s Hospital.

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