Dietary Fiber: recommended daily intake
Reference values for dietary fiber across life-stage groups, from National Academies: DRIs for Energy, Carbohydrate, Fiber, Fat, Protein, Amino Acids (2002/2005).
38g
men
25g
women
Adults 19–50.
| Life stage | RDA / AI | UL | EAR | AMDR |
|---|---|---|---|---|
| Infants 0–6 months | - | - | - | - |
| Infants 7–12 months | - | - | - | - |
| Children 1–3 years | 19g (AI) | - | - | - |
| Children 4–8 years | 25g (AI) | - | - | - |
| Males 9–13 years | 31g (AI) | - | - | - |
| Females 9–13 years | 26g (AI) | - | - | - |
| Males 14–18 years | 38g (AI) | - | - | - |
| Females 14–18 years | 26g (AI) | - | - | - |
| Adult males 19–50 | 38g (AI) | - | - | - |
| Adult females 19–50 | 25g (AI) | - | - | - |
| Adult males 51+ | 30g (AI) | - | - | - |
| Adult females 51+ | 21g (AI) | - | - | - |
| Pregnancy (19–30) | 28g (AI) | - | - | - |
| Lactation (19–30) | 29g (AI) | - | - | - |
Notes
- Fiber AI values are based on median intakes in populations with lowest coronary heart disease rates.
Source: National Academies: DRIs for Energy, Carbohydrate, Fiber, Fat, Protein, Amino Acids (2002/2005) (snapshot 2026-04-30)