Decreased renal function is not only observed in older adults but can also occur in younger individuals as a result of unhealthy lifestyle behaviors. Unhealthy dietary behaviours, including high protein intake, junk food and caffeine consumption, along with inadequate fluid intake, may be associated with symptoms of decreased renal function among university students. This study aimed to examine the association between high protein intake, caffeine consumption, junk food consumption, and daily fluid intake with symptoms of decreased renal function among health science students at Horizon Indonesia University. This study employed a quantitative analytical design with a cross-sectional approach. A total of 300 students were selected using accidental sampling. Data were collected using a questionnaire and analyzed using the Chi-square test. A significant association was observed between high protein intake (p = 0.037), caffeine consumption (p = 0.007), junk food consumption (p = 0.003), and daily fluid intake (p = 0.001) with symptoms of decreased renal function. In conclusion, dietary patterns and drinking habits were significantly associated with symptoms of decreased renal function among health science students. These findings highlight the importance of promoting healthy dietary patterns and adequate fluid intake through nutrition education and preventive health programs to support renal health among university students.
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