Title: Premature birth - Symptoms and causes - Mayo Clinic
Headings: Premature birth
Premature birth
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Premature birth

Content: But premature birth can happen to anyone. In fact, many women who have a premature birth have no known risk factors. Complications
While not all premature babies experience complications, being born too early can cause short-term and long-term health problems. Generally, the earlier a baby is born, the higher the risk of complications. Birth weight plays an important role, too. Some problems may be apparent at birth, while others may not develop until later. Short-term complications
In the first weeks, the complications of premature birth may include: Breathing problems. A premature baby may have trouble breathing due to an immature respiratory system. If the baby's lungs lack surfactant — a substance that allows the lungs to expand — he or she may develop respiratory distress syndrome because the lungs can't expand and contract normally.