A diet consisting mainly of potatoes, thermally processed vegetables, and fish, will help to reduce risk. With such advice were employees of medical institutions of Sweden, Norway and Iceland after researched data 66000 pregnant women. Of them 3505 (5.3%) gave birth prematurely.

If the woman followed the first diet (high in fiber, vegetables, fruits), the risk of premature birth has declined by about 12%, especially if he was the firstborn. The second variant of the diet has helped reduce the risk somewhere on 9%.