Could it all be wrong? Some scientists say calorie counts are too inaccurate to be trusted. Ed Ou/AP hide caption itoggle caption Ed Ou/AP The Salt Calorie Counts: Fatally Flawed, Or Our Best Defense Against Pudge? February 20, 2013 Scientists say the time-honored calorie is too flawed to give people a good measure of what they're eating. But many nutritionists say calories are still the most useful tool for keeping tabs on food intake and maintaining healthy weight.