Norwegian researchers analyzed 2.3 million birth records in the past few decades and the health data of corresponding pregnant women. The results showed that if the mother had hyperemesis gravidarum during pregnancy, the possibility of the daughter also having this symptom during subsequent pregnancy was three times that of others. The study also showed that hyperemesis gravidarum had nothing to do with whether the fetus contained relevant genes from the husband. The gene that causes this symptom can only come from the mother. 
In the past decades, the proportion of Norwegian women smoking has increased year by year, and smoking is related to hyperemesis gravidarum
 the researchers believe that hyperemesis gravidarum has nothing to do with the father's gene, but is inherited from the mother to the daughter.