Fiber on a Low-Carb Diet: How Much You Need and the Best Sources Adults need 21 to 38 g of fiber a day, but most get about 15. Here's how to reach your target on a low-carb or keto diet with vegetables, berries, nuts, and seeds.
How Much Protein Do You Need on a Low-Carb Diet? The RDA is 0.8 g of protein per kg, but older adults, active people, and dieters may do better at 1.0 to 1.6 g/kg. Here's how to find your number.