Avocados
High in fibre, protein and oleic acid – a healthy monounsaturated fat compound – and low in carbohydrates and sugar, avocados can help to keep blood sugar levels on an even keel. As a result, you won’t feel the urge to snack until your next meal.

"Stick to one quarter to one half of an avocado at a time though," says Remmer. "The calories can add up if you eat an entire avocado due to its high (but healthy) fat content."