Intestinal flatulence may also occur in 12-day-old newborn babies because there is no age difference for intestinal flatulence, and it may also occur if babies suffer from indigestion, gastrointestinal peristalsis disorder, overfeeding, and so on. When the baby has indigestion, gastrointestinal peristalsis disorder, etc., the gas in the gastrointestinal tract may not be able to be discharged out of the body in time with the gastrointestinal peristalsis, and thus intestinal flatulence occurs, which may be manifested as abdominal distension, nausea, and increase in anal defecation. Intestinal flatulence does not discriminate by age, even 12-day-old babies can have intestinal flatulence. It is important to note that if the baby appears to have abnormal bowel movements, restless sleep, spitting up and other symptoms, it is recommended to consult a doctor in time to identify the cause, and under the guidance of the doctor to carry out treatment. As you can see, when a 12-day-old newborn baby develops flatulence, parents should pay close attention to the baby’s symptoms, and if the symptoms do not subside or are accompanied by other symptoms, they should consult a doctor to find out the cause in a timely manner.