A recent study by the Harvard School of Public Health has found that you can really eat more food and still lose weight.
Research monitoring 12,000 people over 20 years showed eating larger portions of healthy food can be more effective in helping you slim than diets that encourage you to consume less.
Weight-loss diets don't necessarily mean meagre portions said Aine O'Connor, nutrition scientist at the British Nutrition Foundation (BNF).
"It's all about the energy density of your diet, that is how many calories it has per gram," the Daily Express quoted O'Conno as saying.
"For example, taking a standard spaghetti bolognese recipe and reducing the meat content, using half-fat cheese and adding plenty of vegetables can reduce the energy density by half which means you can eat twice as much for the same calories," she added.