A new poll from the University of Michigan found parents rely on three main criteria to decide if their child is too sick for school: whether the child's condition could get worse, whether the illness may spread to classmates, or whether their child will miss important work. CBS News medical contributor Dr. Tara Narula joins "CBS This Morning" to offer practical tips that could help you decide when to keep your kids home.
The National Academies of Sciences, Engineering, and Medicine published a new report on the health effects of marijuana, looking at more than 10,000 studies about medical and recreational use. It is the most comprehensive review since 1999. CBS News chief medical correspondent Dr. Jon LaPook joins "CBS This Morning" to discuss the findings.