Prevalence and Population Burden of Cardiovascular–Kidney–Metabolic Syndrome Stages Among Mexican Adults: A Nationally Representative Cross-Sectional Study
This nationally representative cross-sectional study of Mexican adults reveals that nearly 90% of the population meets criteria for Cardiovascular–Kidney–Metabolic (CKM) syndrome, with the majority concentrated in Stage 2 and a significant burden already evident in early adulthood, highlighting an urgent need for integrated prevention strategies.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
The human body is a complex machine where different systems talk to each other constantly. For a long time, doctors and scientists have looked at heart disease, kidney problems, and metabolic issues like diabetes or obesity as separate problems, each with its own specialist and its own set of rules. However, these conditions are deeply connected. Excess body fat can strain the kidneys and clog the arteries, while damage to the heart or kidneys can make it harder to manage weight and blood sugar. Because these systems influence one another, treating them in isolation often misses the bigger picture of a person's overall health. To address this, a new way of thinking has emerged that views these risks not as separate islands, but as a single, continuous journey. This journey starts with a healthy body and moves through stages of increasing risk, eventually leading to established disease. Understanding where a person sits on this path is crucial for preventing serious illness before it starts.
A team of researchers in Mexico recently took a close look at this journey for the entire adult population of their country. Using data from a massive national health survey conducted between 2018 and 2019, they examined the health records of over ten thousand adults. These records included measurements of height, weight, blood pressure, and blood sugar, as well as information about whether participants had been diagnosed with conditions like heart disease or kidney failure. The researchers used a new, unified system to sort every person into one of five distinct stages, ranging from perfect health to advanced disease. This system allowed them to see not just who was sick, but how many people were at risk and exactly how far along the path of decline they had traveled.
The results revealed a startling reality: nearly nine out of ten Mexican adults are already on this path of risk. Only about one in ten adults was found to be completely free of any risk factors. The vast majority of the population, representing roughly 73.6 million people, had already moved past the starting line. The most common stage was the second one, which includes people with metabolic risk factors like high blood pressure, diabetes, or moderate kidney strain, but who have not yet developed clinical heart disease. This group alone accounted for about 61 percent of all adults, or nearly 50 million people. While this stage might sound less severe than having a heart attack, it represents a critical turning point where the body is under significant stress and requires attention to prevent further decline.
The study also showed that this burden is not just a problem for the elderly. Among adults between the ages of twenty and forty-four, more than four out of five were already in a risk stage, with over half of them already in that second, high-risk category. This suggests that the process of decline begins much earlier in life than previously thought. As people get older, the stages become more severe. In the oldest group, those over sixty-five, the proportion of people with advanced disease—defined as having either very high kidney risk or established heart disease—rose significantly. The researchers found that men were slightly more likely to have advanced heart disease, while women were slightly more likely to be in the earlier risk stages, but the overall trend of widespread risk was clear across the entire population.
One of the most important findings was how this new way of looking at health captured more people than traditional methods. If the researchers had only looked for metabolic syndrome, a common diagnosis that combines several risk factors, they would have missed a large portion of the population. The new, integrated approach identified millions more people who needed care because it recognized that even a single risk factor, when combined with others, moves a person forward on the risk continuum. The study confirmed that this framework provides a much clearer map of the nation's health needs, showing that the challenge is not just treating the few who are already very sick, but managing the health of the many who are quietly moving toward illness.
The researchers were careful to note that their study was a snapshot in time, so they could not say for certain how individuals would progress from one stage to another in the future. They also acknowledged that some specific medical tests, like those for certain types of kidney damage, were not available in the survey data, which might mean the numbers for some risk groups are slightly lower than the true reality. However, the data was robust enough to show a clear and urgent pattern. The study concludes that Mexico, and likely many other nations, faces a massive public health challenge where the majority of the adult population is already carrying the seeds of cardiovascular and kidney disease. The path forward requires a shift in how health is managed, moving away from treating isolated symptoms and toward a coordinated approach that protects the heart, kidneys, and metabolism together, starting from early adulthood.
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