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. 2021 Apr 20;24(14):4397–4407. doi: 10.1017/S1368980021001695

Table 4.

Adequacy of vitamin B12 intake from food and supplements and in total (n 1530)

Vitamin B12 intake category Proportion of participants in intake category (%)
B12 intake from food/drinks B12 intake from Supplements Total B12 intake
Intake = 0 2·1 27·1 0·6
Intake >0 < EAR 81·1 3·9 23·3
Intake ≥ EAR < RDI 6·1 0·6 2·2
Intake less than RDI 89·3 31·6 26·1
Intake ≥ RDI < 4 µg/d 7·8 1·8 5·3
Intake ≥ 4 µg/d 2·9 66·7 68·6
Intake meets/exceeds RDI 10·7 68·5 73·9

EAR, estimated average requirement; RDI, recommended dietary intake.