1 Introduction 1 1 Introduction 1.1 Objectives … … … … 04 Non-communicable diseases (NCDs) are the leading cause of death throughout the globe and is one of the major health challenges of the 21st century (WHO, 2018). According to World Health Organization (WHO), NCDs are responsible for 71% (41 million of the 57 million) of deaths occurred around the world. Chronic NCDs are not transmitted directly from one person to another, and they take long duration to develop as well as to show the symptoms. The premature mortality and morbidity due to NCDs have major impact on health-care costs, productivity and growth (Couser et al., 2011). The major NCDs with highest number of deaths mainly includes cardiovascular diseases, cancers, respiratory disorders and diabetes; while it also includes various other health problems such as hepatic, renal, gastrointestinal, endocrine, hematological, neurological, dermatological, genetic and mental disorders as well as disabilities (Habib and Saha, 2010; WHO, 2018; Budreviciute et al., 2020; Wang and Wang, 2020). Non-communicable diseases are long duration illnesses which targets men, women and children of all income categories (National Health Mission, 2018). The progression of various NCDs is slow to rapid based on types of diseases and it requires treatments for several years and few may also require life-long treatment. The lifestyle and clinical related factors like obesity, physical inactivity, high cholesterol, hypertension, depression, diabetes, smoking, consumption of unhealthy diet rich with fat, salt and sugar as well as excess alcohol intake have been recognized as the most common risk factors for several NCDs (National Health Mission, 2018; Peters et al., 2019). The increase in the non-communicable diseases day by day leads to morbidity and mortality worldwide (WHO 2018; Budreviciute et al., 2020). The four major life-threatening non-communicable diseases responsible for highest number of deaths among the globe are cardiovascular diseases (17.9 million annual deaths; 31% of global deaths); cancer (9 million; 16%); chronic respiratory diseases (3.9 million; 7%) and diabetes (1.6 million; 3%). More than 80% of premature deaths is mainly due these four groups of diseases. The mortality of more than 15 million adult individuals aged 30–69 years were reported due to NCDs and 1 Introduction 2 85% of these are premature deaths mainly observed in low- as well as middle-income countries. The burden of NCDs can be reduced through multi-sectoral effective prevention measures (Mahat and Thapa, 2019; Akseer et al., 2020). World Health Organization along with United Nations system agencies made several policies to reduce the risk, prevention and control of NCDs (WHO, 2019; Budreviciute et al., 2020). Kidney diseases are one of the important public health problems as approximately 850 million individuals are suffering from different types of kidney diseases around the globe (Li et al., 2020; Lameire et al., 2021). Kidney diseases are of various types; while, those leading to end-stage renal disease (ESRD) mainly includes inherited kidney diseases, glomerulonephritis, infections, stones, obstructive uropathy, benign prostatic hypertrophy, acute renal failure, chronic kidney disease (CKD) and kidney diseases due to diabetes and hypertension (Driks et al., 2006). The prevalence of ESRD is more common among males than females (Benjamin and Lappin, 2021). Acute Kidney Injury (AKI), earlier known as Acute Renal Failure (ARF) is an instantaneous decrease in the function of the kidney leading to both structural (injury) and functional (impairment) damage (Srilakshmi, 2014; Makris and Spanou, 2016). This leads to acid-base and fluid-electrolyte imbalance resulting in retention of nitrogenous waste products in the blood (ANNA, 2019). Decreased glomerular filtration rate and increased proteinuria are commonly observed in case of AKI (Hsu and Hsu, 2016). Individuals with or without the history of kidney diseases may suffer permanent decrease in kidney functioning after the single or repeated episodes of AKI (Henry Ford Health System, 2015). Acute kidney injury has been classified into three stages based on the serum creatinine level and urine output as stage 1 (Risk), stage 2 (Injury) and stage 3 (Failure). Loss of blood (due to accidents, hemorrhages, during delivery), loss of plasma (due to burns), loss of fluids (due to vomiting, diarrhoea, excessive sweating and urination), infections, surgical procedures and many more serious health issues results in acute renal injury (Srilakshmi, 2014). Low urine volume, nausea, vomiting, loss of energy, hypertension and anorexia are the common symptoms observed in case of acute kidney injury. Elevated blood urea may also lead to mortality of the suffering individual. Chronic Kidney Disease (CKD) is one of the major public health issues worldwide, contributing to increased rate of morbidity and mortality especially in low-income countries (Ameh et al., 2020; GBD Chronic Kidney Disease Collaboration, 2020). CKD is due to both 1 Introduction 3 structural and functional renal abnormalities caused due to low nephron number from birth, exposure to toxic components and certain diseases leading to severe kidney injuries and also nephron loss due to aging (Srilakshmi, 2014; Romagnani et al., 2017). CKD is also known as uremia and is the outcome of acute glomerulonephritis, pyelonephritis and nephrotic syndrome. Various sociodemographic risk factors also play a major role in the development of CKD like food insecurity, non-white race, low education and income (Chen et al., 2019). Chronic kidney disease has been classified into five stages based on the estimated Glomerular Filtration Rate (GFR) as stage 1, 2, 3A, 3B, 4, 5, 5D and 5T; where stage 5, 5D and 5T is the end-stage renal disease requiring dialysis and kidney transplantation (Henry Ford Health System, 2015). Dehydration, loss of appetite, vomiting, elevated blood pressure, oedema, irregular heartbeat, anaemia, skin related problems and neurological issues are the certain symptoms reported in individuals suffering with CKD (Srilakshmi, 2014; Webster et al., 2017). The mortality and morbidity due to kidney diseases is increasing in recent years in India due to lack of knowledge, late diagnosis, less availability and higher cost for treatments (Singh et al., 2013; Balasubramaniyan et al., 2020). As a developing country, India has several challenges and situations that effect the early diagnosis and management of CKD as the facilities and expertise available for the diagnosis of treatment are distributed unequally around the country (Varughese and Abraham, 2018). Along with medication and therapies, proper nutritional management/balanced diet is also necessary to the patients for effective treatment and to avoid metabolic complications (Maurya et al., 2018). In current era, plantbased diets, Mediterranean diets and DASH (Dietary Approach to Stop Hypertension) plays a major role in delaying the progression of CKD (Naber and Purohot, 2021). Kidney disease is one of chronic non-communicable diseases leading to mortality and morbidity throughout the globe. The lifestyle related factors like cigarette smoking, alcohol consumption and obesity results in the development of chronic kidney disease. Along with various conventional therapies, balanced nutrition helps in the healthy recovery of the patients. There are various medical centers are distributed throughout the country uses many diagnostic methods to treat different types of kidney diseases. Thus, the main aim of this study is to assess the prevalence of different types of kidney diseases among men and women, role of dietary intake and lifestyle impact on individuals with kidney diseases and also role of hospital diet in the early recovery of the patients through survey and observational study in Father Muller Medical College Hospital, Kankanady, Mangaluru. 1 1.1 Introduction 4 Objectives The survey and observational study has been carried out in Father Muller Medical College Hospital, Kankanady, Mangaluru with following major objectives. Assessment of role of dietary intake among patients with kidney diseases Assessment of lifestyle-related and other common risk factors for kidney diseases Assessment of prevalence of renal diseases among men and women Observational study on hospital diet given for kidney patients