In several studies, lower intakes of vitamin C and vitamin E were
reported with the increased risk of pregnancy induced hypertension
[3,7,10,15,16]. Oken et al. [5] has observed lower intakes of vitamin
C and vitamin E in women with preeclampsia, and higher intakes of
vitamin C and vitamin E in women with gestational hypertension.
In a randomized clinical trial which was conducted by Poston et al.
[40], supplementation with vitamin C and E did not decrease the risk
of preeclampsia. In the present study, a reverse association between
vitamin C intake and the risk of gestational hypertension was found
which could be attributable to the antioxidant characteristic of vitamin
C. It has been posited that oxidative stress plays a role in the development
of hypertensive disorders of pregnancy and antioxidant vitamins, such
as vitamin C and E, might protect against this abnormality [3]. Findings
of current study have shown a direct association between vitamin E
intake and gestational hypertension that are inconsistent with the result
of other studies. One possible reason may be due to the higher intake
of polyunsaturated fatty acids in the gestational hypertension group,
and it is usually expected that increased intake of poly unsaturated fatty
acids are followed by increased intake of vitamin E.
In several studies, lower intakes of vitamin C and vitamin E werereported with the increased risk of pregnancy induced hypertension[3,7,10,15,16]. Oken et al. [5] has observed lower intakes of vitaminC and vitamin E in women with preeclampsia, and higher intakes ofvitamin C and vitamin E in women with gestational hypertension.In a randomized clinical trial which was conducted by Poston et al.[40], supplementation with vitamin C and E did not decrease the riskof preeclampsia. In the present study, a reverse association betweenvitamin C intake and the risk of gestational hypertension was foundwhich could be attributable to the antioxidant characteristic of vitaminC. It has been posited that oxidative stress plays a role in the development of hypertensive disorders of pregnancy and antioxidant vitamins, suchas vitamin C and E, might protect against this abnormality [3]. Findingsof current study have shown a direct association between vitamin Eintake and gestational hypertension that are inconsistent with the resultof other studies. One possible reason may be due to the higher intakeof polyunsaturated fatty acids in the gestational hypertension group,and it is usually expected that increased intake of poly unsaturated fattyacids are followed by increased intake of vitamin E.
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