Abstract
Evidence suggests lack of understanding of the association of specific nutrients with different time points of linear growth trajectory. We investigated the role of dietary macro- and micronutrients on length-for-age z (LAZ) score trajectory of children across first 24 months of their life. The MAL-ED Bangladesh birth cohort study recruited 265 healthy newborn children after birth. The linear growth trajectory of those children was modeled using latent growth curve modeling (LGCM) technique. Dietary magnesium intake at 9 to 11 months was positively associated (coefficient β = 0.006, P < .02) with LAZ at 12 months. Animal protein intake at 15 to 17 months, in turn, was positively associated (β = 0.03, P < .03) with LAZ at 18 months. However, vitamin D intake at 15 to 17 months was negatively associated (β = -0.06, P < .02) with LAZ at 18 months. Other micro- and macronutrients did not show any statistically significant association with the linear growth trajectory. We also found that birth weight (β = 0.91, P < .01), treating water (β = 0.35, P < 0.00), and maternal height (β = 3.4, P < .00) were positively associated with intercept. Gender had a significant negative association with the intercept, but a positive association with the slope (β = -0.39, P < .01; β = 0.08, P < .04), respectively. Conversely, birth weight had negative association with the slope (β = -0.12, P < .01). Dietary magnesium and animal protein were positively and vitamin D was negatively associated with the linear growth trajectory. Maternal height, birth weight, gender, and treatment of drinking water also played significant roles in directing the trajectory.
Highlights
Evidence suggests lack of understanding of the association of specific nutrients with different time points of linear growth trajectory
Very few studies have measured the association of dietary nutrients with different time points of linear growth trajectory. To address this gap we aimed to investigate the role of macro- and micronutrients on linear growth trajectory of children across the first 24 months of age by applying latent growth curve models to the MAL-ED birth cohort data
With the aid of the latent growth curve modeling (LGCM), we have found that dietary magnesium and animal protein were positively associated with length-for-age z (LAZ) scores, while vitamin D intake was negatively associated to it
Summary
Evidence suggests lack of understanding of the association of specific nutrients with different time points of linear growth trajectory. Objective: We investigated the role of dietary macro- and micronutrients on length-for-age z (LAZ) score trajectory of children across first 24 months of their life. Results: Dietary magnesium intake at 9 to months was positively associated (coefficient b 1⁄4 0.006, P < .02) with LAZ at months. Animal protein intake at 15 to months, in turn, was positively associated (b 1⁄4 0.03, P < .03) with LAZ at months. Other micro- and macronutrients did not show any Keywords macro- and micronutrients, linear growth trajectory, growth curve model, under 2 children, Bangladesh. Stunting or linear growth faltering starts during the intrauterine period and can continue until 24 months of age and beyond.[4] Maternal malnutrition, frequent infections, and inadequate dietary intakes are known to play crucial roles in determining the trajectory of linear growth of a child.[5]
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