Imagine being told your blood sugar is normal, your labs are "fine," and yet, beneath the surface, your body has been struggling for years with a silent metabolic dysfunction. In today's episode of Infinite Health, Dr. Arasi Maran, an interventional cardiologist, to unpacks the hidden epidemic of insulin resistance, a root cause fueling heart attacks, fatty liver, dementia, and more. Despite its impact, insulin resistance is rarely screened for and often missed until it's progressed for a decade or longer. Together, we’ll cut through the noise and reveal why traditional testing fails to catch this condition early, how it connects to nearly every chronic disease of modern life, and what practical steps you can take to detect and reverse, it before it’s too late. Get ready to shift from reactive medicine to proactive health with science-backed strategies for knowing your numbers, moving your body, eating real food, and transforming your long-term well-being.
00:00 Understanding insulin resistance early
05:24 Insulin resistance and health impacts
09:08 Early detection of insulin resistance
12:01 Understanding triglyceride to HDL ratio
14:38 Calculating and interpreting Homo IR
17:10 Exercise to combat insulin resistance
21:29 Impact of ultra processed foods
26:05 Impact of stress on visceral fat
28:11 Discussion on BMI and body composition
32:27 FDA approval for CGMs in 2024
36:11 Discussing GLP1 and diabetes treatments
39:49 Key takeaways for better health
Seeing the Invisible: How Insulin Resistance Hides in Plain Sight
In our latest episode of Infinite Health, host and interventional cardiologist got us through Dr. Arasi Maran for a wide-ranging discussion on a condition that lurks beneath the surface for years, insulin resistance. It’s the upstream disease that silently drives everything from heart attacks and fatty liver to dementia and cancer, yet is almost never screened for in routine medicine. Here are some of the most eye-opening insights from their conversation.
The Root Cause in the Cath Lab
When most people think about the causes of heart disease, they think about high cholesterol. But as Dr. Arasi Maran explained, that’s only a small piece of a much larger puzzle. Instead, “the metabolic dysfunction driven by insulin resistance” is the real culprit behind much of what she treats in the cardiac cath lab 02:01. Elevated cholesterol? That’s just one of many downstream consequences of metabolic dysfunction. At the cellular level, insulin’s purpose is to ferry glucose from the bloodstream into our muscles and liver. When cells become “resistant,” the pancreas pumps out ever-more insulin trying to force the issue. Blood sugar might remain normal for years, but behind the scenes, high insulin fuels inflammation, visceral fat, abnormal blood lipids, and eventually the diseases we fear most 02:05.
Why We’re Missing the Mark
Standard medical testing almost never catches insulin resistance early. Most routine labs look only at fasting glucose or A1C, snapshots that only tip into abnormal ranges after the pancreas has been wearing itself out for a decade or longer 07:21. The tragedy, emphasized by Dr. Arasi Maran, is that by the time you have prediabetes or diabetes, the disease has already been brewing, silently for 10 to 20 years 03:08. Waiting for blood sugar to rise is like waiting to smell smoke after the house is already ablaze.
What Should We Measure Instead?
To truly spot insulin resistance early, Dr. Arasi Maran recommends a simple, insurance-friendly panel: fasting insulin, fasting triglycerides, HDL, fasting glucose, and hemoglobin A1C 10:14. With these, you can calculate indices like HOMA-IR, the triglyceride-to-HDL ratio, and the triglyceride-glucose index proven, powerful predictors of metabolic risk far in advance of classic disease markers 11:17. Normal doesn’t mean optimal, so don’t accept “in range” as a free pass, push for double-digit triglycerides and fasting insulin under 7.
The triglyceride-to-HDL ratio is especially useful: under 2 for most, but even lower for South and East Asians who develop metabolic disease at lower body weights 12:36. As Dr. Arasi Maran shared, population differences matter as risk can skyrocket at BMI levels considered normal for others 27:20.
Muscle: The Forgotten Organ of Metabolic Health
No medication, even the newest GLP-1 agonists outperforms one ancient prescription: move your muscles. Dr. Arasi Maran’s point was unequivocal: of every tool she has, nothing beats strength training and zone 2 cardio in restoring insulin sensitivity and reversing disease 17:21. Our muscles are the body’s main glucose “sink,” and activating them consistently can profoundly reduce disease risk.
Food, Sleep, and Stress: The Other Pillars
What about diet? Dr. Arasi Maran points out it’s not just sugar that matters, ultra-processed foods, refined carbohydrates, sugar-sweetened beverages, and even stress and poor sleep all drive up insulin resistance 20:44, 24:03. Getting adequate protein is particularly important, especially for women aiming to build metabolic health.
Takeaway: Move Early, Move Often
Insulin resistance is hiding in plain sight, harming people long before classic lab numbers shift. The key takeaways from Dr. Arasi Maran: know your numbers, focus on building muscle, eat real food, sleep well, and manage stress 39:49. The best time to act is now—when disease is most reversible. Don’t wait for a diagnosis to start investing in your metabolic health.