Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,550 questions · 1,617 findings · 161 reviews · Neonatal

No studies found 238 · 14.7%GRADE not reported 76 · 4.7%Very low 377 · 23.3%Low 567 · 35.1%Moderate 285 · 17.6%High 74 · 4.6%

Vitamin D given to lactating mothers vs placebo or no treatment

Nutritional rickets ‐ radiological · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to lactating mothers changes nutritional rickets ‐ radiological compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Vitamin D given to lactating mothers vs placebo or no treatment

Hypercalcaemia · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to lactating mothers showed no clear difference in adverse effects (hypercalcaemia) compared with placebo or no treatment (low certainty).

1 finding from 1 review

Vitamin D given to infants vs vitamin D given to lactating mothers

Vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to infants changes vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L compared with vitamin D given to lactating mothers (very low certainty).

1 finding from 1 review

Vitamin D given to infants vs vitamin D given to lactating mothers

Vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to infants changes vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L compared with vitamin D given to lactating mothers (very low certainty).

1 finding from 1 review

Vitamin D given to infants vs vitamin D given to lactating mothers

Hypercalcaemia · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to infants showed no clear difference in adverse effect (hypercalcaemia) compared with vitamin D given to lactating mothers (low certainty).

1 finding from 1 review

Vitamin D given to infants vs placebo or no treatment

Vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to infants may leads to lower vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L compared with placebo or no treatment (low certainty).

1 finding from 1 review

Vitamin D given to infants vs placebo or no treatment

Vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to infants changes vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Vitamin D given to infants vs placebo or no treatment

Hypercalcaemia · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to infants showed no clear difference in adverse effects (hypercalcaemia) compared with placebo or no treatment (low certainty).

1 finding from 1 review

Vitamin D given to lactating mothers vs placebo or no treatment

Vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to lactating mothers may leads to lower vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L compared with placebo or no treatment (low certainty).

1 finding from 1 review

Vitamin D given to lactating mothers vs placebo or no treatment

Vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to lactating mothers may leads to lower vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L compared with placebo or no treatment (low certainty).

1 finding from 1 review

Vitamin D given to lactating mothers vs placebo or no treatment

Nutritional rickets ‐ biochemical Alkaline phosphatase, calcium and phosphate levels. · term breastfed infants to prevent vitamin D deficiency and improve bone health

Vitamin D given to lactating mothers may leads to lower nutritional rickets ‐ biochemical Alkaline phosphatase, calcium and… compared with placebo or no treatment (low certainty).

1 finding from 1 review