New year, new determined-to-be-healthy regimen. But how do you know which snacks to include in your oh-so-healthy diet — and which are to be avoided?

“Snacks and occasional treats are two different things,” the nutritionist Fiona Hunter says. “A snack is something you have regularly between meals and should make a positive contribution to your diet. Fruit, rice or oatcakes, crudités, roasted chickpeas, hummus, natural yoghurt, plain kefir and more can all be included — but if you want to buy a more processed snack, look for something with 100 to 200 calories that adds protein, fibre, vitamins and minerals or is one of your five a day. Avoid too much sugar, salt and saturated fat. Don’t take the packet at face value — always