Silent Epidemic: Chronic Kidney Disease Cases Soar Globally – What You Need to Know
The number of adults living with chronic kidney disease (CKD) has doubled since 1990, reaching nearly 800 million people worldwide, according to a recent study published in The Lancet. This alarming rise isn’t simply about more people getting sick; it’s a complex interplay of factors, including lifestyle changes and improvements in treating other conditions.
The Rising Tide of Kidney Disease
Globally, one person dies from CKD every 20 seconds. The increase in CKD is largely driven by the growing prevalence of overweight, obesity, diabetes, and hypertension. Interestingly, improved preventative treatment for cardiovascular disease also plays a role. People are living longer, and this extended lifespan allows time for CKD to develop.
The Situation at Home: A Growing, Often Undiagnosed, Problem
The situation mirrors that of other Western countries: Notice more people with CKD than there are unemployed individuals, and a significant portion remain undiagnosed and untreated. Early detection is crucial, but often lacking.
A Grim Forecast: CKD as a Leading Cause of Death
Unlike most major causes of death, the age-standardized global mortality rate for CKD is increasing. In Spain, CKD is projected to become the third leading cause of death by 2050, surpassing ischemic heart disease and colon cancer. Those who will succumb to CKD in 2050 are currently between 50 and 60 years old – a population that should be aware of, and screened for, early CKD (high albuminuria with normal kidney function).
Prevention is Key: Halting the Progression
Approximately half of all CKD cases are attributable to diabetes or hypertension, making them largely preventable. Many cases of kidney failure requiring dialysis are also preventable with early intervention.
Simple Steps for Kidney Health
General health measures also protect the kidneys: moderate exercise (avoiding elevators and escalators), a Mediterranean diet, avoiding smoking, and maintaining a healthy weight. Treating diabetes and hypertension with medications that also protect the kidneys – achieving multiple benefits with a single approach – is also vital. Regular monitoring of albuminuria is also essential. Individuals with normal kidney function but high albuminuria have a significantly increased risk of needing dialysis.
Pro Tip: Don’t dismiss the importance of a healthy lifestyle. Small changes can have a significant impact on your kidney health.
New Tools for Early Detection: The SCREAM Calculator
Traditionally, CKD is diagnosed when kidney function (glomerular filtration rate) falls below half of normal levels. This often occurs late in the disease process, when irreversible damage has already occurred. Researchers have developed a new calculator to identify risk earlier, allowing for proactive intervention.
The calculator, accessible at https://scream.meb.ki.se/egfr-percentiles/, establishes statistical normality for kidney function based on age and sex, using data from over one million individuals. It provides a percentile ranking of kidney function, similar to growth charts used for children. A low percentile indicates a higher risk and warrants further investigation, focusing on albuminuria, blood pressure, cholesterol, diabetes (blood glucose), and estimated glomerular filtration rate.
Did you know? Being in the 5th percentile for kidney function is akin to playing a game with seven players instead of eleven – significantly reducing your chances of success.
How Early Can Risk Be Identified?
The timing of risk identification depends on age, current kidney function, and the rate of decline. For example, a 40-year-old with a glomerular filtration rate of 80 ml/min/1.73 m2 falling in the 4th percentile might be cause for concern and warrant albuminuria testing. Normal albuminuria suggests a low risk for the next 30 years, while elevated albuminuria indicates existing CKD and a potential need for dialysis within 20 years if left untreated.
Accuracy and the Potential for Screening
Kidney function can fluctuate due to physiological conditions. Repeat testing is recommended if initial results are low due to potentially confounding factors. A diagnosis of CKD requires consistently low glomerular filtration rates (below 60 ml/min/1.73 m2) on two occasions, at least three months apart.
Screening for CKD is possible and, according to experts, should be implemented. One example is the Preveriñón screening program offered at the Fundación Jiménez Díaz, targeting the Prevecolon population (ages 50-69). A simple urine analysis can potentially prevent dialysis through early diagnosis and treatment, which also protects the heart.
Frequently Asked Questions (FAQ)
Q: What is albuminuria?
A: Albuminuria is the presence of albumin (a protein) in the urine. It’s an early sign of kidney damage.
Q: What is glomerular filtration rate (GFR)?
A: GFR measures how well your kidneys are filtering waste from your blood.
Q: Is obesity a direct cause of kidney disease?
A: While more research is needed, strategies to reduce obesity can improve proteinuria and glomerular filtration rates.
Q: Can lifestyle changes really make a difference?
A: Yes! Diet, exercise, and avoiding smoking are all crucial for kidney health.
Don’t wait until it’s too late. Take proactive steps to protect your kidney health today. Explore additional resources on kidney disease prevention and early detection, and discuss your risk factors with your healthcare provider.
