Until I was 70 I had IBS. I took a food intolerance test and the result revealed an intolerance to lactose (What’s weakening our guts?, G2, 18 February). I gave up dairy products and I’ve never had trouble since. I’ve been fine for the last 20 years. Constipation, which can be a result of food intolerances, causes swelling in the colon which then can lead to diverticulitis. Perhaps if people just got a food intolerance test, they could save themselves a lot of trouble.
• The case for urgently lowering the voting age from 18 to 16 throughout the UK emerges inescapably from the well-informed, articulate and cogently expressed arguments that we have been hearing from young people over the past few days (Thunberg: ‘EU must double its targets to cut global warming’, 22 February).
• Never mind Bus Stop/backstop (Letters, 21 February), every time Brexit is mentioned I sing any of these songs by the Hollies: I Can’t Let Go, Stop Stop Stop, Stay or Heading For a Fall.
• After mention of Dave Dee, Dozy, Beaky, Mick and Tich (Letters, 22 February) did anyone else immediately think of Theresa May’s multitalented team of Brexit negotiators?
Gordon Bennett, Llangollen canal
• It’s obvious how the stones of Stonehenge were transported from the Preseli hills to their final resting place: by the ancient method of rock’n’roll (Report, 20 February).
• Join the debate – email email@example.com
• Read more Guardian letters – click here to visit gu.com/letters
• Do you have a photo you’d like to share with Guardian readers? Click here to upload it and we’ll publish the best submissions in the letters spread of our print edition