Opt for high quality carbs and fats.
“It's the latest entry in a heated war between nutrition scientists: one faction advocates low carb intake (20 percent or less of your daily energy from carbohydrates, with most of the remaining 80 percent coming from fat); and another advocates more moderate carb intake (between 45 and 65 of energy from carbohydrates.
First, there's no specific ratio of carbs to fat that works best for everyone, so it will never be possible to declare a winning diet.
"Good health and low chronic disease risk can be achieved for many people on diets with a broad range of carbohydrate-to-fat ratios,"
Second, the sources of carbs and fats matters as much, or even more than, the ratio you eat them in. Or, to put it even more simply: just eat whole, high-quality foods.
More research is also needed into the ketogenic diet, characterised by very high amounts of fat (70 percent or more of dietary intake from fat) and very low amounts of carbohydrate. Most health experts warn that this diet is not suitable for the general population — it's not only hard to follow, but may have unintended health consequences — but the authors of the new paper agreed it may have therapeutic uses for specific conditions.
"Given the enormous human and economic toll of diet-related disease, high-quality research into key controversies should be given priority."