California - A new study has found that smoking marijuana is increasing among pregnant women in California, which leads to health concerns about the unborn child. The study was published on Dec. 26 in the Journal of the American Medical Association, according to Fox News, and used the medical records of 279,000 women residing in California who were on Kaiser Permanente, a health care service. Women who agreed to participate were asked to answer a questionnaire when they were about eight weeks pregnant, and take a drug test to see if they tested positive for marijuana use. In the study,...