Background: Diet is an important modifiable factor that may influence sleep quality, with several foods, nutrients, and dietary patterns reported to affect sleep-related outcomes. However, evidence regarding the relationship between Halal dietary practices and sleep quality remains limited. This study aimed to determine the association between the frequency of consumption of Halal-certified food groups and sleep quality among adult Filipino Muslims. Methods: An analytical cross-sectional study was conducted among 323 adult Filipino Muslim members of the Greenhills Muslim Traders Association in San Juan City, Philippines. Participants were selected using purposive sampling based on predefined inclusion and exclusion criteria. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), while dietary intake was measured using a structured questionnaire on the frequency of consumption of Halal-certified food groups. Descriptive statistics were used to summarize participant characteristics, dietary patterns, and sleep quality. Multivariable logistic regression analysis was performed to determine the association between Halal-certified food group consumption and sleep quality. Results: Halal-certified grain products were the most frequently consumed food group (mean = 2.39), while Halal-certified combination foods were the least frequently consumed (mean = 1.21). The mean global PSQI score was 4.62, indicating generally good sleep quality, and 67.8% of participants were classified as good sleepers (PSQI ≤5). Sleep efficiency had the highest mean component score (1.16), whereas subjective sleep quality had the lowest (0.00). Multivariable logistic regression showed no significant association between the frequency of consumption of most Halal-certified food groups and sleep quality (p > 0.05). However, more frequent consumption of Halal-certified combination foods was significantly associated with lower odds of good sleep quality (OR = 0.697, 95% CI: 0.529–0.919, p = 0.010). Conclusion The frequency of consumption of most Halal-certified food groups was not significantly associated with sleep quality among adult Filipino Muslims. However, increased consumption of Halal-certified combination foods was associated with lower odds of good sleep quality. Further studies should explore other dietary and behavioral factors that may influence sleep outcomes.
Sleep quality ;