Which diet is likely to contain higher levels of fiber?

A plant-based diet is likely to contain higher levels of fiber because it predominantly consists of fruits, vegetables, whole grains, legumes, nuts, and seeds, which are all excellent sources of dietary fiber. Fiber is found primarily in plant foods, and a diet rich in these sources will naturally lead to higher fiber intake.

In contrast, diets that focus on high protein, saturated fat, or ketogenic diets often limit or eliminate many fiber-rich foods. High-protein diets may rely heavily on meat and dairy, which contain little to no fiber. Saturated fat diets may emphasize fatty animal products, which again lacks fiber. Ketogenic diets, designed to minimize carbohydrate intake, typically restrict grains, fruits, and starchy vegetables, all of which contribute significantly to dietary fiber. This makes the plant-based diet the best choice among the options for achieving higher fiber levels.