ARTICLE INFO | ABSTRACT | |
ORIGINAL ARTICLE | Background: Nutrition and dietary habits is one of the determinant factor on glycemic control of diabetes mellitus. This study aims to investigate the association between type 1 diabetes mellitus (T1DM) and diet in the first two years of life as well as a select group of demographic variables. Methods: This case-control study was conducted on 76 children with T1DM and 209 non-diabetic children selected through convenience sampling from the population of people visiting the community health centers of the city of Jahrom, Iran. The required data were collected by a questionnaire of diet and demographic information completed by the mothers of the children. The data were analyzed using logistic regression and adjusted odds ratio. Results: Finally, the results of multiple backward logistic regression showed that the studied factors had a significant association with T1DM (P < 0.05), including body mass index (BMI) less than 18 kg/m2 for mothers before pregnancy (OR: 4.4, 95% CI: 1.61 to 11.97), mothers without a history of diabetes (OR: 0.02, 95% CI: 0.001 to 0.60), mother’s weight before pregnancy (OR: 0.88, 95% CI: 0.84 to 0.91), mother’s excess weight during pregnancy (OR: 0.83, 95% CI: 0.75 to 0.93), exclusive breastfeeding for more than six months (OR: 0.19, 95% CI: 0.03 to 0.96), low weight gain in the first two years of life (OR: 6.98, 95% CI: 2.16 to 22.5), and the breastfeeding less than 12 months (OR: 10.52, 95% CI: 1.62 to 66.64). Conclusion: BMI less than 18 kg/m2 for mothers before pregnancy, low weight gain in the first two years of life, and breastfeeding less than 12 months increased the risk of developing T1DM in children. Keywords: Type 1 diabetes mellitus; Breast milk; Breastfeeding; Diet; Children |
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Article history: Received: 25 Jun 2021 Revised: 14 Jul 2021 Accepted: 15 Aug 2021 |
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*Corresponding author: vahid.rahmani1392@gmail.com Department of Public Health, Torbat Jam, Faculty of Medical Sciences, Torbat Jam, Iran. Postal code: 75781-95717 Tel: +98 917 5985204 |
Table 1. Mean (±SD) of the child’s and mother’s age at delivery, weight before pregnancy, and excess weight during pregnancy in the case and control groups. | |||
Variables | Control group | Case group | P-value |
Child’s age (year) | 11.94 ± 3.3 | 12.14 ± 4.13 | 0.69a |
Mother’s age at delivery (years) | 25.58 ± 6.87 | 25.71 ± 5.31 | 0.88b |
Mother’s weight before pregnancy (kg) | 64.81 ± 8.81 | 56.62 ± 10.72 | 0.0001a |
Mother’s excess weight during pregnancy (kg) | 10.72 ± 2.91 | 8.92 ± 4.51 | 0.0001a |
a: Student t-test; b: Mann-Whitney test. |
Table 2. Frequency and distribution of the variables in the case and control groups. | ||||
Variables | Control group | Case group | P-valuea | |
Child’s non-diet variables | ||||
Fetal age at birth (week) |
< 37 | 22 (10.5)b | 10 (13.1) | 0.53 |
> 37 | 187 (89.5) | 66 (86.9) | ||
Gender |
Female | 90 (43.1) | 30 (39.5) | 0.58 |
Male | 119 (56.9) | 46 (60.5) | ||
Birth weight (g) |
< 2500 | 20 (9.6) | 8 (10.5) | 0.81 |
> 2500 | 189 (90.4) | 68 (89.5) | ||
Weight at 1 year of age (g) |
< 9500 | 49 (23.4) | 21 (27.6) | 0.47 |
> 9500 | 160 (76.6) | 55 (72.4) | ||
Birth order |
First or second | 143 (68.4) | 57 (75) | 0.28 |
Third or fourth | 66 (31.6) | 19 (25) | ||
Mother’s variables | ||||
History of diabetes |
Yes (before pregnancy/pre-gestational) | 1 (0.5) | 3 (3.9) | 0.07 |
Yes (during pregnancy/gestational) | 13 (6.2) | 6 (7.9) | ||
No | 195 (93.3) | 67 (88.2) | ||
Method of delivery |
Vaginal | 119 (56.9) | 57 (75.0) | 0.02 |
C-section | 90 (43.1) | 19 (25.0) | ||
Mother’s weight status |
Normal | 119 (56.9) | 49 (64.5) | 0.0001 |
Underweight | 16 (7.7) | 18 (23.7) | ||
Overweight | 62 (29.7) | 8 (10.5) | ||
Obese | 12 (5.7) | 1 (1.3) | ||
History of diabetes in first-degree family members |
Yes | 112 (53.6) | 33 (43.4) | 0.12 |
No | 97 (46.4) | 43 (56.6) | ||
Child’s diet and growth variables (in the first two years of life) | ||||
Exclusive breastfeeding (month) |
< 4 | 19 (9.1) | 13 (17.1) | 0.04 |
5 | 17 (8.1) | 2 (2.6) | ||
6 | 65 (31.1) | 30 (39.5) | ||
> 6 | 108 (51.7) | 31 (40.8) | ||
Status of the baby’s weight gain chart during the first two years of life | Below the normal line | 49 (23.4) | 10 (13.2) | 0.08 |
Normal | 146 (69.9) | 63 (82.9) | ||
Above the normal line | 14 (6.7) | 3 (3.9) | ||
Age of onset of complementary feeding (month) |
< 4 | 7 (3.3) | 4 (5.3) | 0.18 |
5 | 16 (7.7) | 8 (10.5) | ||
6 | 118 (56.5 ) | 49 (64.5) | ||
> 6 | 68 (32.5) | 15 (19.7) | ||
Use of cow milk in the first year of life | Yes | 20 (9.6 ) | 12 (15.8) | 0.14 |
No | 189 (90.4 ) | 64 (84.2) | ||
Use of artificial milk |
Yes - along with breast milk | 33 (15.8) |
12 (15.8) |
0.64 |
Yes - without breast milk | 34 (16.3) |
9 (11.8) |
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No | 142 (67.9 ) | 55 (72.4 ) | ||
Breastfeeding period (month) |
< 12 | 21 (10.0) | 11 (14.5) | 0.0001 |
12-24 | 174 (83.3) | 39 (51.3) | ||
> 24 | 14 (6.7) | 26 (34.2) | ||
a: Chi square test; b: N (%). |
Table 3. Results of univariate and multivariable logistic regression for independent variables with the T1DM in children aged 2 to 15 years. | ||||
Variables | Unadjusted OR [95% CI] |
P-value | Adjusted OR [95% CI] |
P-value |
Child’s non-diet variables | ||||
Age (year) | 1.01 [0.94 – 1.09] | 0.66 | 1.002[0.88 – 1.13] | 0.97 |
Fetal age at birth More than 37 weeks (compared to less than 37 weeks) |
0.77 [0.34 - 1.72] | 0.53 | 1.43[0.27 – 7.59] | 0.66 |
Gender Female (compared to male) |
0.86 [0.50 - 1.47] | 0.58 | 0.6[0.26 – 1.38] | 0.23 |
Birth weight More than 2500 g (compared to less than 2500 g) |
2.13 [0.37 - 2.14] | 0.81 | 0.47[0.11 – 1.92] | 0.29 |
Weight at 1 year of age More than 9500 g (compared to less than 9500 g) |
1.25 [0.42 - 3.66] | 0.68 | 1.21[0.04 – 3.62] | 0.72 |
Birth order Third or fourth (compared to first or second) |
0.72 [0.39 – 1.31] | 0.28 | 0.5[0.2 – 1.23] | 0.13 |
Mother’s variables | ||||
Mother’s age at delivery (year) | 1.006[0.95 – 1.05] | 0.81 | 1.02[0.94 – 1.14] | 0.49 |
History of diabetes Gestational diabetes (compared to pre-gestational diabetes) |
0.15[0.01-1.81] | 0.13 | 0.04[0.001 – 1.15] | 0.06 |
No diabetes (compared to pre-gestational diabetes) | 0.12 [0.01- 0.12] | 0.06 | 0.02[0.001 – 0.60] | 0.02 |
Mother’s weight before pregnancy | 0.94[0.88 – 0.97] | 0.0001 | 0.88[0.84 – 0.91] | 0.0001 |
Mother’s excess weight during pregnancy | 0.84[0.76 – 0.92] | 0.0001 | 0.83[0.75 – 0.93] | 0.001 |
Method of delivery (C-section compared to vaginal) | 0.45[0.25- 0.81] |
0.007 |
0.56[0.24 – 1.3] |
0.18 |
Mother’s weight status Underweight (compared to normal) |
2.73[1.28-5.79] |
0.009 |
4.4[1.61 – 11.97] |
0.004 |
Overweight (compared to normal) | 0.31 [0.14-0.70] | 0.005 | 0.18[0.06 – 0.53] | 0.002 |
Obese (compared to normal) | 0.20[0.02 -1.59] | 0.13 | 0.03[0.002 – 0.45] | 0.011 |
History of diabetes in first-degree family members (No compared to Yes) | 1.5[0.88-2.55] | 0.13 | 1.76[0.79 – 3.87] | 0.16 |
Child’s diet and growth variables (in the first two years of life) | ||||
Exclusive breastfeeding 5 months (compared to less than 4 months) |
0.17 [0.034 - 0.87] |
0.03 |
0.08[0.006 – 1.06] |
0.05 |
6 months (compared to less than 4 months) | 0.67[0.29 – 1.54] | 0.35 | 0.35[0.07 – 1.68] | 0.19 |
More than 6 months (compared to less than 4 months) | 0.42[0.18 – 094] | 0.03 | 0.19[0.03 – 0.96] | 0.04 |
Status of the baby’s weight (Abnormal [compared to normal) | 2.11[1.007-4.43] | 0.049 | 6.98[2.16 – 22.5] | 0.001 |
Chart during the first two years of life (Above the normal line compared to below the normal line) | 1.05[0.25-4.35] | 0.94 | 1.31[0.19 – 8.93] | 0.78 |
Age of onset of complementary feeding 5 months (compared to less than 4 months) |
0.87 [0.19 – 3.89] |
0.86 |
15.25[0.88 – 262.01] |
0.06 |
6 months (compared to less than 4 months) | 0.72[0.20 – 2.59] | 0.62 | 0.86[0.08 – 7.56] | 0.86 |
More than 6 months (compared to less than 4 months) | 0.36[0.10 – 1.48] | 0.17 | 0.54[0.05 – 5.65] | 0.61 |
Use of cow milk in the first year of life (No compared to Yes) | 0.56[0.26 – 1.21] | 0.14 | 0.34[0.08 – 1.45] | 0.14 |
Use of artificial milk Yes - along with breast milk [compared to No] |
0.68[0.30 – 1.51] | 0.35 | 0.54[0.24 – 0.1.32] | 0. 30 |
Yes -without breast milk [compared to No] | 0.93[0.45 – 1.94] | 0.86 | 1.38[0.45 – 4.24] | 0.56 |
Breastfeeding period 12-24 months compared to over 24 months |
0.43[0.19 – 0.96] | 0.04 | 0.89[0.17 – 4.62] | 0.88 |
Less than 12 months compared to over 24 months | 3.54[1.33 – 9.41] | 0.01 | 10.52[1.62 – 66.64] | 0.01 |
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