Of course, most of the Stones are beyond middle age, unless people are living into their 120s these days, so would the Rolling Stones be allowed to attend their own concert?

NPR: Boomers to Rock with Stones at Super Bowl

As well, eating a healthy diet and consuming sufficient calcium and vitamin D continue to be crucial for bone health in middle age and beyond.

WSJ: Health Journal: Yes, You Are Getting Shorter

This suggests middle age itself now spans 14 years and goes well beyond the government's planned state pension age of 66.

BBC: Middle age begins at 55 years, survey suggests