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PhosphorusNutrition library

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Phosphorus

mg · Minerals

Phosphorus builds bone mineral matrix alongside calcium — distinct from phytate-bound phosphorus in grains (phyt).

Trimester focus

StageFor the motherFor the baby
First trimesterRDA 700 mg/day; widely available in protein foods and dairy.Early skeletal patterning begins.
Second trimesterFetal skeleton mineralises — pair phosphorus with calcium and vitamin D.Rapid bone matrix deposition.
Third trimesterVery high phosphorus with low calcium is worth balancing (see interaction flags).Peak skeletal mineral accretion.

Target note

Total dietary phosphorus (pho) ≠ phytate phosphorus (phyt) used in iron/zinc binding models.

Planning context, not medical advice — confirm supplement doses and screening (ferritin, 25-OH-D) with your healthcare provider.

Phosphorus · Nutrition library