The study, published in the journal JAMA Pediatrics, looked at 244 kids — 81 children evaluated at Children’s Hospital Colorado and 163 marijuana exposure incidences at the state’s regional poison center (RPC) — with the median age of 2.4 years old. On average, the rate of pot poisoning at the hospital increased from 1.2 per 100,000 before legalization to 2.3 per 100,000, and annual RPC pediatric marijuana cases increased 5-fold from 2009 to 2015. A majority of kids had symptoms of poor balance, sleepiness, and a piqued interest in your Grateful Dead t-shirts that went away within 6 to 24 hours. But about 20 percent needed to be admitted, and 15 percent of cases wound up in the intensive care unit. This seems like a big win for anti-legalization advocates, but The Washington Post points out that your kid is far more likely to get poisoned by a number of household items including toothpaste, diaper cream, and crayons. That’s right, there were 1,683 crayon-related poison control calls for kids in 2014. But no matter how slight the chances you still don’t want this to happen your kid. The study cites the the sources of weed were often parents, neighbors, friends, babysitters, family members, and even grandparents. It’s never too early to have a talk with your kid about grandpa’s “glaucoma candy”… or a talk with your dad about childproof containers. [H/T] CNN