"Sobering reading" means that the information or text you are reading is serious, thought-provoking, and may make you feel concerned or worried. Full definition
Makes for sobering reading for Cons and some source of solace for Lib Dems. (ukpollingreport.co.uk)
Even the summary of those risk factors on page 5 of the form makes sobering reading for anyone considering buying a chunk of the social network. (canadianbusiness.com)
The often humane hopes that drew some Americans toward communism would make sobering reading if related to recognizably secular goals today. (firstthings.com)