ABSTRACT
Background: Growing the human brain requires all necessary nutrients to form and maintain, so the development of cognitive functions of infants and children depends on adequate nutrition. Children whose mothers had inadequate nutrition are at high risk for cognitive dysfunction. The objective of the present study was to review the studies conducted on "the relationship between nutrient intake during pregnancy and the development of cognitive functions in toddlers". The present study was conducted by systematic review method using PRISMA checklist items. Methods: To conduct this study, the keywords "maternal nutrition", "pregnancy diet", "pregnancy supplement", "IQ", "intelligence quotient", "neurodevelopment", "cognitive function", "toddler", "early years" and "infant" were searched based on the Mesh database in scientific databases including Scopus, SID, Google Scholar, PubMed, and Science Direct to find articles related to the effect of nutrition during pregnancy on the development of the cognitive function of toddlers and its components in Persian and English. Finally, 17 articles were selected for review in this study. Results: The results showed that taking a supplement of iron, saturated fatty acids, vitamins B and D, and folic acid improved the cognitive functions of toddlers. On the other hand, taking supplements containing iodine and zinc had no significant effect on the development of cognitive functions. Diets containing seafood during pregnancy had a beneficial effect on the cognitive functions of children. Conclusions: The study results highlighted the importance of adequate nutrition during pregnancy and showed that maternal nutrition played an important role in the development of cognitive functions of toddlers.
ABSTRACT
PURPOSE: We investigated the effect of vitamin D therapy on sexual function in women with low vitamin D levels and sexual dysfunction. MATERIALS AND METHODS: We performed this randomized, double-blind, placebo controlled trial in women 18 to 45 years old with sexual dysfunction, defined as a FSFI (Female Sexual Functioning Index) score less than 26.55, and serum 25[OH]D less than 30 ng/ml. Participants received an intramuscular injection of 300,000 IU cholecalciferol or a placebo at baseline and then after 4 weeks. Sexual function was evaluated with the FSFI at baseline, and 4 and 8 weeks. The serum level of 25[OH]D was measured and depression symptoms were evaluated by the BDI (Beck Depression Inventory) at baseline and 8 weeks. RESULTS: A total of 38 women in each group completed the study. Serum 25[OH]D levels increased only in the cholecalciferol group by a mean ± SD of 14.4 ± 3.2 ng/ml (p <0.001). The FSFI score was higher in the intervention group at study week 4 (19.6 vs 16.3, p = 0.002) and week 8 (25.0 vs 17.1, p <0.001). The BDI score was significantly decreased only in the cholecalciferol group by a mean of -21.0 ± 12.3 (p <0.001). The effect of treatment on sexual function was independent of its effect on depression symptoms. CONCLUSIONS: Vitamin D therapy in women with sexual dysfunction and vitamin D deficiency can improve sexual function. This effect does not seem to be mediated by an improvement in depression symptoms.
