Why such suppositions? They are indicated by CSO data for the first half of 2013. According to them, by June 183 thousand were born. children (9,000 less than a year ago), and 202,000 died Poles (by 7.6 thousand more than a year ago).
If the trend does not change, then around 360,000 will be born throughout the year. children, and over 400,000 will die people. Until now, the worst year in post-war Poland was 2003, but then the negative growth was "only" 14,000. A slight predominance of deaths was also recorded in 2002 and 2004-2005, but in the remaining years more people were born than died.
The problem in Poland is not only the very low number of births, but also the aging of the population and the increasing number of deaths. If the predictions are confirmed, this will be the first such situation in Poland after 1945.