Some foods are formulated to be hard to stop eating. That is a design brief rather than a flaw in you, and it goes some way to explaining why one particular snack is the one you think about at eleven at night.

Put a rubber band round your water bottle for each refill you want to get through today, and slide one off each time you finish it. Nothing to remember, nothing to buy, and you can see where you are at a glance.

Own brand products from large retailers were among the worst performers in these tests. A big name on the packet is not a quality check, however much it feels like one.

Skin prick and IgE blood tests find real allergies. The IgG food sensitivity panels sold direct to families have not been shown to measure sensitivity at all, and they tend to come back with a long list of foods to avoid.