Sometimes it's hard to determine whether a diet is credible, although it seems to come from a credible point of view. For example, Dr. Atkins was a medical doctor, and the British Nutrition board is made up of licensed nutrition professionals. How can someone interested in a fad diet determine whether the diet is scientifically credible when both sides of the argument seem to come from credible sources?

Mrs. kirby, 58, is a moderately active woman. she works in the garden almost daily, occasionally walks with her friends, and babysits her three very active young grandchildren every weekend. she eats a fairly standard diet every day: she has cereal with milk and coffee for breakfast, some kind of salad for lunch, and a piece of meat or fish with a healthy of veggies for dinner. she usually skips desserts or has just a couple of strawberries. when asked to look at the food labels and calculate her intake of carbohydrates, fats, and proteins in grams over the entire day, on an average day, she came up with the following numbers: carbohydrates: 243 g fats: 41 g proteins: 63 g calculate what percentage of mrs. kirby's total energy intake came from carbohydrates.