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The recommended adequate intake (AI) for dietary fibers for men is 38 grams per day. This amount is based on research indicating that sufficient fiber intake is essential for promoting digestive health, supporting healthy cholesterol levels, and reducing the risk of chronic diseases such as cardiovascular disease and type 2 diabetes. The 38 grams recommendation comes from the Institute of Medicine, which outlines dietary guidelines to optimize health benefits.

Additionally, dietary fiber is categorized into soluble and insoluble types, both of which play significant roles in maintaining digestive health and regulating blood sugar levels. By ensuring an adequate intake of fiber, men can contribute to their overall health and well-being, making the 38-gram recommendation an important guideline in nutrition.