Calcium in pregnancy
Why it matters, when it matters most, and where it comes from.
Calcium is called out in 29 of the 42 pregnancy weeks we publish. This page gathers what those weeks say, and links to the full guide with daily amounts.
Requirements differ by country and by person. The guide names the authority behind every figure, and your own doctor or dietitian may advise something different for you.
Why calcium matters in pregnancy
Reasons the week-by-week guidance gives: fetal skeleton mineralising; final bone mineralisation.
- Calcium: daily requirement, deficiency signs & food sources — the full guide
The weeks that call for calcium
- 14 weeks pregnant — fetal skeleton mineralising
- 15 weeks pregnant — fetal skeleton mineralising
- 16 weeks pregnant — fetal skeleton mineralising
- 17 weeks pregnant — fetal skeleton mineralising
- 18 weeks pregnant — fetal skeleton mineralising
- 19 weeks pregnant — fetal skeleton mineralising
- 20 weeks pregnant — fetal skeleton mineralising
- 21 weeks pregnant — fetal skeleton mineralising
- 22 weeks pregnant — fetal skeleton mineralising
- 23 weeks pregnant — fetal skeleton mineralising
- 24 weeks pregnant — fetal skeleton mineralising
- 25 weeks pregnant — fetal skeleton mineralising
- 26 weeks pregnant — fetal skeleton mineralising
- 27 weeks pregnant — fetal skeleton mineralising
Common questions
Why does calcium matter in pregnancy?
fetal skeleton mineralising; final bone mineralisation.
Which foods provide calcium?
Dairy. Being a good source does not by itself make a food right for pregnancy — check food safety too.
What are the signs of low calcium?
Osteoporosis (chronic). These have many other causes and several are common in pregnancy anyway, so they are a reason to ask for a blood test rather than to self-diagnose.
Show the evidence
Sources: ACOG, WHO, NHS; NIH Office of Dietary Supplements; ICMR-NIN.
This page gathers and links what the individual week and nutrient pages already publish — it introduces no figure they do not carry, and each one names its own source.
Educational reference, not medical advice. Pregnancies and the care offered around them differ; follow the team looking after you.