Question

After feeding newborns formula milk, their stools have an unpleasant smell. What could be the reason for this? Parents are concerned because this situation has been ongoing for a while, and they worry it might worsen.

Answer

Formula-fed babies may have stools with particles, a phenomenon known as curdled milk stools, which is usually due to the higher protein content in the formula that is not fully absorbed. This is a normal physiological phenomenon. As long as the stool is not loose but yellowish soft stool with particles, there is generally no need for special treatment. This condition usually disappears naturally as the baby’s digestive ability improves. If there is no change in the baby’s feeding situation, precautions should be taken to avoid the baby catching a cold, especially around the abdomen and feet. It is recommended to bring a sample of the stool that differs from usual for a regular stool examination.