Did marijuana use affect birth weight/head size?
No, not in humans. However, it did in animals. This is an interesting finding. The average gestation period was 1 week less for mothers who used marijuana. This was not a new finding. It has been known for centuries that use of marijuana brings on labor at an earlier stage (approximately 1 week). This information is based on research conducted on rats. It proved to be true for mothers participating in the study. Did you study the subjects diet? Yes. Food intake was controlled. It is important to note that mothers took very good care of their babies in utero. This may be for several reasons. Canada has an extensive network of services, both health and human, for mothers and children. Also, many adults in the study who used marijuana were vegetarians and ate much better than the control group. Have you looked at siblings who were exposed or not exposed? There would have to be a 5,000- to 6,000-person study to have significant results. What was the age range of women in the study? Their a
