Rodí se dnes těžší děti?

Are heavier babies born today? by Pavla Koucká.

Have you also heard that a birth weight of newborns has been increasing? In the Czech Republic, you can hear about it regularly, e.g. in antenatal classes. In the article, I analyze biological, sociological and demographic factors which influence a birth weight and, in conclusion, I compare them with statistical data. The result is rather surprising.