Chronic kidney disease is a worldwide health problem that is defined as structural abnormalities or progressive or permanent loss of renal function for 3 months or more, which is usually associated with a decrease in glomerular filtration rate of less than 60 mL/min/1.73 m2 or persistent proteinuria, which can lead to end-stage renal disease or kidney failure. The study aimed at identifying the effect of nutrition, and physical activity on kidney function and relationship between chronic kidney disease and the demographic characteristics of patients. A case-control study and was carried out at Baghdad's Medical City Complex. Data was collected for five months, from the 7th of December 2021 to the 5th of May 2022. The study's sample size was 300 participants (150 cases and 150 controls), which included all patients diagnosed with CKD by a specialist using convenient sampling methods (a nonrandom sampling approach. conclusions:There was a substantial correlation between CKD risk factors and eating behaviors high sodium, high protein, high fat, trans-fat, black tea, coffee, and soft or carbonated sugary drinks and strong significant relationships between CKD risk factors and physical activity frequency and type, with walking being the most common. Physical activity frequency and kind both demonstrated a high connection with GFR.

chronic kidney disease, risk factors, glomerular filtration rate, physical activity, kidney failure,dietaryhabits