As you already know, weight loss isn't as easy as kilojoules in, kilojoules out. The quality of your kilojoules is just as important as the amount you consume. That said, it's still important to pay attention to the numbers if you're serious about slimming down. Loading up on low-kJ foods high in fibre and protein will help you stay fuller longer and stave off cravings, so you're not tempted to nosh on unhealthy foods. Here are the best low-kJ foods to add to your diet to help you reach your weight-loss goals.