Why are fiber supplements not good to increase fiber intake?

Fiber supplements can be less effective than whole food sources of fiber because they often lack the additional nutrients, vitamins, and minerals found in fruits, vegetables, and whole grains. Additionally, fiber supplements may not provide the same health benefits as natural sources, such as promoting gut health and supporting a diverse microbiome. Over-reliance on supplements can also lead to digestive issues if not balanced with adequate hydration and a varied diet. Hence, it's generally recommended to increase fiber intake through whole foods for optimal health benefits.