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. 2020 Oct 6;12(10):3050. doi: 10.3390/nu12103050

Table 4.

Additional daily calorie requirements during pregnancy.

Trimester NNR IOM
1st trimester 103 kcal 0 kcal
2nd trimester 329 kcal 340 kcal
3rd trimester 537 kcal 452 kcal

IOM, Institute of Medicine; NNR, Nordic Nutrition Recommendations [8,11].