Parents Opposed to Pot has tracked child abuse and neglect deaths related to caregiver pot use since the end of 2012, when the first two states voted to legalize marijuana. From news reports, it has found more than 300 such cases. International studies show that more than 60 percent of child abuse and neglect deaths relate to substance abuse. In states that track this problem, marijuana is the substance most often connected to these deaths, at about double the rate of alcohol. See here.
