Metabolic Health Crisis: New Names for Interconnected Diseases

The landscape of medical understanding for several widespread chronic conditions is undergoing a significant transformation, marked by the introduction of new terminologies such as Polyendocrine Metabolic Ovarian Syndrome (PMOS) and Cardiovascular-Kidney-Metabolic (CKM) syndrome. These changes are not merely semantic but represent a landmark shift in how experts conceptualize and address a pervasive 'silent metabolic crisis' that affects millions worldwide, with particular relevance to India. Previously known as Polycystic Ovary Syndrome (PCOS), the condition has been formally renamed to Polyendocrine Metabolic Ovarian Syndrome (PMOS). This rebranding, published in The Lancet after 14 years of global collaboration involving clinicians, researchers, and patient groups, aims to correct a long-standing medical misnomer. The old name, PCOS, misleadingly focused on 'polycystic ovaries,' implying pathological cysts were the primary feature, even though many women diagnosed with the disorder do not have ovarian cysts. The new term, PMOS, accurately reflects the condition's complex, multisystem nature, highlighting its broad impact across endocrine, metabolic, and ovarian systems. It emphasizes widespread hormonal dysregulation and significant metabolic disturbances, including a strong link to insulin resistance and Type 2 diabetes. For Indian women, this renaming carries particular significance, as experts estimate that between 16% and 18% of Indian women live with PMOS, a figure far above the global average. Crucially, South Asian women tend to develop metabolic complications earlier and at lower body weights compared to Western populations, making the 'metabolic' component of PMOS especially pertinent. In a parallel and equally significant development, the American Heart Association (AHA) introduced the Cardiovascular-Kidney-Metabolic (CKM) syndrome in 2023, formalized in new clinical practice guidelines in 2026. CKM syndrome is not a single disease but a broad disorder recognizing the profound overlap and interconnectedness of cardiovascular disease, kidney disease, and metabolic conditions such as obesity, Type 2 diabetes, high blood pressure, and abnormal cholesterol. This framework acknowledges that these conditions often share common underlying factors and can contribute to the onset and progression of one another. For instance, extra body fat or dysfunctional fat tissue can release inflammatory substances that damage the heart, kidneys, and arteries, making insulin less effective and promoting plaque development and kidney damage. The guideline defines CKM syndrome across four stages, from individuals with early metabolic risk factors (like overweight/obesity or prediabetes) to those with established cardiovascular disease, emphasizing early detection and intervention. The core concept linking these reclassifications is the 'silent metabolic crisis' or metabolic dysfunction. This refers to the body's inability to efficiently manage key metabolic indicators like blood sugar, cholesterol, blood pressure, and fat storage. This dysfunction often progresses silently for years without obvious symptoms, causing insidious damage to organs such such as the liver, kidneys, heart, and brain. By the time conditions like diabetes, heart disease, or chronic kidney disease are diagnosed, the underlying metabolic damage may have been accumulating for a significant period. India is particularly susceptible to this crisis. Recent data indicates that more than one in three individuals in India exhibit early metabolic health risks, with a high prevalence of abnormal cholesterol levels, pre-diabetic risk, and obesity markers. Urban India, in particular, faces a growing metabolic health crisis, with millions estimated to be overweight or obese and a staggering number living with diabetes or at pre-diabetic risk. Factors such as sedentary lifestyles, high-carb and processed diets, chronic stress, poor sleep patterns, and environmental pollution are identified as key drivers of this crisis in the country. The prevalence of metabolic syndrome in adult Indian populations ranges, with pooled estimates around 30-32% in urban areas and 22% in rural areas, and a significant increase with age. Females generally show a higher prevalence than males. Medical experts are now advocating for a holistic approach, moving away from treating individual illnesses in isolation. Recognizing that conditions like fatty liver (now Metabolic Dysfunction-Associated Steatotic Liver Disease or MASLD), diabetes, kidney disease, and heart disease are often different manifestations of the same metabolic problem allows for earlier intervention and potentially better long-term outcomes. Early screening, coupled with healthy lifestyle interventions such as a balanced diet, regular exercise, adequate sleep, and stress management, are crucial for improving and even reversing metabolic dysfunction before irreversible organ damage occurs. The goal of these new terminologies and guidelines is not to over-medicalize but to enhance awareness, promote early prevention, facilitate more accurate diagnosis, and enable comprehensive, integrated care that addresses the root metabolic imbalances across the lifespan.

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