Demi Lovato wants “protections” to be introduced for child stars. The 32-year-old singer shot to stardom as a child, when she appeared on the TV series ‘Barney and Friends’, and Demi now believes that up-and-coming stars should be given more help and support. In a trailer for a new documentary called ‘Child Star’, Demi says: “Everyone wanted to make it in the industry at a young age.” The ‘Cool for the Summer’ hitmaker confessed to having serious concerns about the wellbeing of young stars. Demi – who has previously struggled with alcoholism and drug addiction – said: “It just scares me to hea…