Which is better, a low-fat/high-carbohydrate diet or a high-fat/low-carbohydrate diet -- or is it the type of fat that matters? In a new paper, researchers with diverse expertise and perspectives on the issues laid out the case for each position and came to a consensus and a future research agenda.The researchers agreed that no specific fat to carbohydrate ratio is best for everyone, and that an overall high-quality diet that is low in sugar and refined grains will help most people maintain a healthy weight and low chronic disease risk. They agreed that by focusing on diet quality -- replacing saturated or trans fats with unsaturated fats and replacing refined carbohydrates with whole grains and nonstarchy vegetables -- most people can maintain good health within a broad range of fat-to-carbohydrate ratios.