Body Is Breakfast Good or Bad for Weight Loss? Is Breakfast Good or Bad for Weight Loss? It May Be Too Early to KnowThere’s a new study looking at eating breakfast and weight loss. In the past, some studies suggested that eating breakfast might help promote weight loss, while skipping a morning meal might lead to weight gain. But according to a new review of research published January in the BMJ, there’s no strong evidence to support the idea that eating breakfast aids weight loss.