The weed market may have found a new niche in the pregnant women category. This may be problematic, as the Centers for Disease Control and Prevention have said that that marijuana by a mother could cause developmental problems and low birth weight for the unborn children, though the results are as yet inconclusive, but all that hasn’t stopped expecting women from expecting to get high.

According to new a study published in the The Journal of the American Medical Association (JAMA) just days ago, California’s pregnant mothers have increased their cannabis use from 4.2 % in 2009 to 7.1 % in 2016. Mothers-to-be aged under 18 increased their use from 12.5% to 21.8% during that time, and pregnant women 18-24 nearly doubled in their cannabis use, from 9.8% to 19%.

But Californians are not special in this regard, as it turns out. Another study published in the same journal almost exactly a year ago found that pregnant women all across this nation have upped their cannabis use in recent years.

The number of pregnant women who said they had used cannabis in the last month when surveyed shot up 62% from 2002 to 2014, according to a study of women 18 to 44 researched by Deborah S. Hasin, a professor in psychiatry at Columbia University Medical Center.

While in 2002, only 2.37% of pregnant women said they had used cannabis or hashish in the last month, 3.85% said they had sipped of mother ganja when asked in 2014.

Hasin’s research found that younger moms-to-be were more likely to indulge in the wacky weed than their older counterparts. Expecting mothers 18 to 25 years old reported using marijuana recently at a 7.47% rate, while only 2.12% of those 26 to 44 said they’d used in the last month. Past year use was high overall. 11.63% of expecting moms of all ages said they had used some form of cannabis in the last year.

Not surprisingly, this is all pretty consistent with a rise in women’s use of cannabis in general. Among nonpregnant women, both past-month and past-year use were up from 2002, with 9.27% using in the last month and 15.93% using in the last year.

Photo via Flickr user Torsten Mangner