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. 2022 Nov 1;22(1):624.
doi: 10.1186/s12887-022-03633-3.

Dietary intake of yogurt and cheese in children at age 1 year and sleep duration at age 1 and 3 years: the Japan Environment and Children's Study

Mariko Inoue  1 , Kenta Matsumura  1   2 , Narumi Sugimori  1 , Kei Hamazaki  1   2   3 , Akiko Tsuchida  1   2 , Hidekuni Inadera  4   5 ; Japan Environment and Children’s Study (JECS) Group
Affiliations

Dietary intake of yogurt and cheese in children at age 1 year and sleep duration at age 1 and 3 years: the Japan Environment and Children's Study

Mariko Inoue et al. BMC Pediatr. .

Abstract

Background: We previously reported that 1-year-old infants born to mothers who regularly consumed fermented food during pregnancy had a lower risk of sleep deprivation. However, it is not known if these positive effects are enhanced when infants themselves eat fermented foods or the long-term effects of such consumption. In this study, we examined the association between the frequency of fermented food intake during the child's weaning period and sleep deprivation at age 1 and 3 years.

Methods: This birth cohort study used data from a nationwide, government-funded study called the Japan Environment and Children's Study (JECS), covering 65,210 mother-child pairs. We examined the association between infants' consumption of fermented foods at 1 year of age and sleep deprivation at 1 and 3 years of age.

Results: There was no association between yogurt or cheese intake and sleep duration at age 1; at age 3, there was no group difference, although a trend test showed that yogurt intake at age 1 was significantly associated with sleep duration at age 3. There was also no association between the frequency of cheese intake and inadequate sleep duration at age 3.

Conclusion: Frequency of children's yogurt and cheese intake at age 1 was not associated with sleep duration at age 1 or 3. However, a trend test showed a significant association between the frequency of yogurt intake at age 1 and sleep duration at age 3.

Keywords: Birth cohort; Fermented foods; Sleep.

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Conflict of interest statement

The authors declare that they have no competing interests.

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Fig. 1
Flow diagram of the recruitment and exclusion process for participants
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