Studies on dietary fiber in women show overall benefits, but the evidence varies by outcome. Strong evidence supports that adequate fiber intake (25–30 g/day) reduces risk of cardiovascular disease, type 2 diabetes, and colorectal cancer in both sexes. For women specifically, some observational studies suggest a modest inverse association between fiber intake and breast cancer risk, particularly premenopausal, but results are inconsistent and not yet conclusive (evidence: human-moderate). Fiber also aids weight management by increasing satiety and supports gut health (regularity, microbiome diversity). However, very high intakes (>40 g/day) may cause bloating or interfere with mineral absorption in some women. Most recommendations are based on mixed evidence (epidemiological and mechanistic). Caveat: No single food or supplement is a magic bullet; a varied, fiber-rich diet is key. Individual tolerance and gradual increase are advised.
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