YOUNG

people are said to be obsessed with social media, but some of their grandparents are addicted, too. Human rights activist Bianca Jagger, 73, admits that Twitter is giving her sleepless nights. ‘I spend a great deal of time on it — maybe more than I should,’ the ex-wife of Sir Mick Jagger confesses. ‘I have very little sleep. One of the great difficulties about being on Twitter, and taking on issues that are controversial and difficult, is how do you know who you can retweet, and how do you know what you can say?’