Ask for Evidence on 5 a day

We are all familiar with '5 a day'. But if you look abroad it turns out other countries are advising six, or seven or even ten portions of fruit and veg a day. What's the evidence behind these differing recommendations and after more than ten years does the 5 a day message need to be updated?

We've asked over 40 governments around the world about their fruit and veg recommendations and what the evidence is to back them up. We are gathering these examples of asking for evidence and will share them with you over the course of this week:

• Asking for Evidence on 5 a day
• 5 a day: is it working and what does it cost?
• 5 a day all over the world?
• Worldwide daily fruit and veg recommendations (and the evidence)
• Why bother with fruit and veg in the first place?

With the help of Public Health England we also ran a Q&A using questions you had sent us.