What are the Risk Factors for Kidney Disease?

Risk Factors for Kidney Disease: Causes, Symptoms & Prevention 

Kidneys remove extra water and natural waste from the body, produce red blood cells, and keep bones healthy. Heart disease, high blood sugar levels, and being overweight are predictive risk factors for kidney disease. Globally, chronic kidney disease affects approximately 10–15% of the adult population, with a higher burden observed in low- and middle-income countries. 

Risk Factors That Trigger Kidney Disease 

Early detection of kidney disease is important. Sometimes, kidney disease progresses without causing signs and noticeable symptoms, so knowing risk factors can increase the possibility of preventing the disease. Key risk factors include: 

1. Hypertension (High Blood Pressure) 

Hypertension is a major risk factor for kidney disease and can lead to chronic kidney disease, end-stage renal disease, increased mortality, and cardiovascular complications.  High blood pressure reduces blood flow by narrowing blood vessels. It causes weakness in other organs of the body, including the kidneys. 

2. Diabetes 

Each kidney consists of a million small filters and nephrons. For diabetic patients, high blood sugar levels damage filtering units, mainly the blood vessels within the kidneys. 

Damaged blood vessels become clogged and narrow. It prevents blood flow in the kidneys and causes protein leakage in the urine, which indicates kidney damage.     

3. Obesity 

Having obesity or being overweight raises the risk of diabetes and high blood pressure, which are primary causes of kidney disease. Severe obesity significantly increases the risk of kidney disease compared to normal body weight, partly due to its association with diabetes and hypertension. 

4. Age 

Older people are more susceptible to having kidney damage or failure. Age is a multitude of psychological and physical changes, including alterations of organ structure and function. Reduced numbers of tiny filters in the kidneys, impaired renal blood flow and decline in renal function are common age-related issues and contribute to the risk of developing kidney disease. 

5. Heart Disease    

Adults living with heart disease are likely to face kidney problems, and both share common risks, such as high blood pressure and diabetes. Due to severe heart disease, the heart fails to pump and fill with oxygen-rich blood, leading to reduced blood flow to the kidneys. Reduced blood flow affects kidney function and causes kidney damage.   

Apart from the above risk factors, a family history of kidney problems and diabetes can cause kidney disease over time. 

Signs and Symptoms of Kidney Disease 

People suffering from kidney disease may experience these symptoms, 

• Frequent urination 
• Foamy urine 
• Nausea 
• Dry or itchy skin 
• Appetite loss 
• Weight loss 

In the advanced stage of kidney disease, people may face noticeable symptoms, including: 

• Swelling or numbness in legs, ankles, arms and feet 
• Muscle cramp 
• Breathing shortness 
• Vomiting 
• Breath smells fishy or like ammonia 
• Sleeping issues 

Kidney disease is a condition in which the kidneys are damaged slowly and fail to remove waste and filter extra water from the body. Diabetes, heart failure, high blood pressure, obesity and age are risk factors for kidney diseases. Frequent urination, dry or itchy skin, appetite loss, muscle spasms, tiredness, nausea, and swelling in the legs and hands are common symptoms of kidney disease. 

Reader information: This content is intended for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment. Kidney disease and its risk factors vary by individual. Readers should not rely on this information as a substitute for professional medical consultation. Always seek the advice of a qualified healthcare provider regarding any medical condition, symptoms, or treatment decisions. The authors and publishers are not responsible for any consequences arising from the use of this information. 

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