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CalciumNutrition library

LibraryNutrientsMinerals

Calcium

mg · Minerals

Builds the fetal skeleton and supports maternal bone, nerve and muscle function — maternal bone itself buffers supply if intake falls short.

Trimester focus

StageFor the motherFor the baby
First trimesterDemand is modest; absorption efficiency begins rising in preparation.Skeletal patterning begins, with mineralisation still mostly ahead.
Second trimesterMaternal calcium-absorption efficiency rises substantially to meet new demand.Mineralisation of the developing skeleton picks up pace.
Third trimesterIf dietary intake is short, maternal bone is drawn on to meet fetal demand.The fetal skeleton accumulates most of its calcium in this trimester.

Target note

Keep clear of the heme-iron meals.

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

Calcium · Nutrition library