Impact of Dietary Patterns on Micronutrient Status among First-Year University Students Living in Hostels: A Longitudinal Study

Project Abstract

This longitudinal study investigates how dietary patterns influence micronutrient status among first-year university students living in hostel accommodations over an academic year. A cohort of 300 newly admitted students (150 males, 150 females) aged 17–21 was recruited from three campuses with diverse hostel food environments. Data were collected at baseline, mid-semester, and end of the academic year to capture temporal changes in diet and micronutrient biomarkers. Dietary intake was assessed using multiple 24-hour recalls and a validated food-frequency questionnaire to derive pattern classifications such as traditional, Westernized, and mixed dietary patterns, as well as overall diet quality indices. Micronutrient status was evaluated through biochemical analyses, including serum ferritin, 25-hydroxyvitamin D, zinc, selenium, folate, vitamin B12, and calcium, alongside relevant hematological and inflammatory markers to account for subclinical deficiencies and inflammation that may affect biomarker interpretation. Anthropometric measurements and body composition were recorded to explore associations with nutrient status, while physical activity was monitored using accelerometry and standardized questionnaires to control for energy expenditure as a confounder. Statistical analyses employed linear mixed-effects models to examine longitudinal relationships between dietary pattern scores and micronutrient biomarkers, adjusting for age, sex, socioeconomic status, menstrual status in females, pubertal stage, hostel meal plan type, supplement use, and inflammation. Latent class analysis identified distinct dietary pattern trajectories across the year, enabling the assessment of exposure duration and stability. Mediation analyses explored whether diet quality mediated the relationship between hostel food environment (menu variability, meal timing, and availability of fortified options) and micronutrient status. Subgroup analyses examined gender-specific differences and the impact of dormitory type (single-sex vs mixed) on nutrient outcomes. Key findings reveal that adherence to a higher-quality, nutrient-dense dietary pattern with regular iron-rich sources, vitamin C intake, and fortified foods was associated with favorable ferritin, vitamin D, folate, and B12 trajectories, whereas persistent reliance on energy-dense, low-nutrient Western patterns correlated with declines in several micronutrients. Seasonal variations in campus meal offerings and reliance on convenience foods during examination periods contributed to transient nutrient fluctuations. Notably, iron status remained suboptimal for a substantial proportion of females, even after controlling for dietary intake, suggesting influences of menstruation, inflammation, and bioavailability. Vitamin D insufficiency/deficiency was prevalent across the cohort, particularly in winter months, underscoring the role of sun exposure and fortified foods. Zinc and selenium levels showed modest associations with overall diet quality but were sensitive to inflammatory status, highlighting the need to interpret biomarkers contextually. The study provides evidence-based insights into how hostel-related food environments shape micronutrient adequacy among first-year students. Implications include targeted interventions to optimize hostel menus (e.g., iron-fortified snacks, vitamin D–rich options, regular fruit and vegetable availability), education on nutrient-dense choices, and policy recommendations for meal-plan design to promote sustained nutrient adequacy throughout the transition to university life.

Project Overview

What This Project Is About

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A straightforward look at how what first-year students eat in hostels affects their micronutrient levels over time. The study follows students during their first year to see links between daily food choices, meal patterns, and vitamins and minerals in the body.

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The Problem It Addresses

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Many students living in hostels rely on limited meal options that may lack essential nutrients. This can lead to hidden nutrient deficiencies that affect health, energy, and academic performance. The project investigates whether hostel eating patterns contribute to micronutrient gaps.

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Objectives of the Project

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1. Describe the common dietary patterns of first-year hostel students.
2. Measure changes in selected micronutrient levels over one academic year.
3. Identify associations between diet quality and micronutrient status.
4. Suggest practical dietary improvements for hostels to improve nutrient adequacy.

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What You Will Do Step by Step

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1. Review simple nutrition basics and select key micronutrients to monitor (e.g., iron, vitamin A, calcium, vitamin C).
2. Recruit a small group of first-year hostel residents and obtain consent.
3. Collect baseline dietary data with easy food diaries or checklists.
4. Measure micronutrient status through simple, non-invasive tests or use existing lab data if available.
5. Repeat dietary tracking and status measurements at multiple points over the year.
6. Analyze associations between what students eat and their micronutrient levels using plain statistics.
7. Interpret findings and discuss feasible hostel dietary improvements.

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Expected Outcome

Clear insights on which meals or foods most influence micronutrient status and practical, low-cost recommendations for hostel menus to reduce nutrient gaps.