To understand the modern crisis of “bad cholesterol”—specifically Low-Density Lipoprotein Cholesterol (LDL-C)—we must look at our evolutionary design. Biologically, humans are “the fat primate.” While our closest living relatives, like chimpanzees and rhesus monkeys, maintain a total body fat percentage of less than 9%, a healthy human range spans from 14% to 31%. 

Evolutionary biologists attribute this to an ancient genetic shift: our ancestors developed a modified DNA packaging structure in fat cells that favoured storing energy as calorie-dense white fat rather than burning it as brown fat. This adaptation was highly advantageous, providing the massive energy reserves required to fuel our uniquely large, glucose-hungry brains and protect us from unpredictable periods of starvation. In non-human primates living in their natural habitats, total cholesterol levels rarely exceed 100–150 mg/dL, and LDL-C remains remarkably low. This baseline is mirrored in human newborns. At the moment of birth, regardless of geography or ethnicity, a healthy neonate has an LDL-C level of only about 30–50 mg/dL.

During infancy, as the child consumes cholesterol-rich breast milk or formula to support rapid myelination (the formation of protective sheaths around nerve fibres in the brain), total cholesterol and LDL-C naturally rise, with LDL-C stabilizing around 60–70 mg/dL.In historical hunter-gatherer human populations, adult LDL-C levels rarely surpassed 50–70 mg/dL—a level that modern medicine now recognizes as physiologically optimal for preventing the accumulation of arterial plaque.

The Century of Deviation: Global and Indian TrendsOver the last 100 years, the global baseline for adult cholesterol has undergone a radical shift. As industrialization altered human ecology, adult LDL-C levels plummeted upward, with modern global averages for adults now hovering between 110–130 mg/dL.What was once a survival mechanism—the ability to efficiently store fat and retain lipids—has become a metabolic mismatch in an environment characterized by caloric surplus and physical immobility.

The Indian Subcontinent: A Unique DisadvantageIn India, this metabolic shift has played out with catastrophic velocity. Over the past century, India has transitioned from a country burdened primarily by infectious diseases to one dominated by non-communicable diseases. Today, cardiovascular diseases (CVDs) account for nearly 28% of all deaths in the country. When looking at lipids, standard Western definitions of dyslipidaemia (abnormal lipid levels) often fail to capture the unique architecture of the South Asian lipid profile. Indians frequently exhibit what is known as the Atherogenic Dyslipidaemia Triad:

Elevated Triglycerides Low HDL-C (“good” cholesterol)A high concentration of Small, Dense LDL particlesEven when an Indian patient’s total LDL-C number appears “normal” on a laboratory report, the type of LDL they carry is highly toxic. Small, dense LDL particles........

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