Metabolic Classrooms

Does tirzepatide really work by increasing insulin? Dr. Ben Bikman explains the science behind appetite suppression, insulin sensitivity, and metabolic health.

Fat cells are far more than passive storage containers. In this Metabolic Classroom lecture, Dr. Ben Bikman explains how nuclear receptors like PPAR-gamma influence fat storage, insulin sensitivity, cortisol signaling, and overall metabolic health.

Most people think neuropathy is caused by high blood sugar alone—but that’s only part of the story. Learn the three key factors that actually drive nerve damage.

The vagus nerve acts like a communication highway between your brain, gut, liver, and pancreas. In this Metabolic Classroom lecture, Dr. Ben Bikman explains how this nerve helps regulate insulin, blood sugar, appetite, and how the body prepares for food before you even take a bite.

Your muscle isn’t all the same—and the type you have plays a major role in insulin sensitivity. Learn how slow- and fast-twitch fibers influence blood sugar control and what you can do to improve your metabolic health.

Most people think GLP-1 controls insulin—but what if the reverse is driving the problem? Learn how chronically high insulin can suppress your body’s natural “fullness” signal and fuel a cycle of hunger, weight gain, and metabolic dysfunction.

Ivermectin is widely known as an antiparasitic drug—but emerging research suggests it may also influence metabolism, inflammation, and insulin sensitivity. Here’s what the science actually says.

Poor sleep disrupts hormones that regulate appetite, increasing hunger and cravings. Learn how sleep influences metabolism.

For decades, Alzheimer’s disease was blamed on amyloid plaques in the brain. But a growing body of research suggests the disease may actually be driven by impaired brain metabolism and insulin resistance—sometimes called “Type 3 diabetes.”

Why do some lean populations have diabetes rates similar to countries with high obesity? The answer isn’t just body weight — it’s how and where fat is stored. In this Metabolic Classroom, Dr. Ben Bikman explains how ethnicity, fat cell size, and distribution shape metabolic risk far beyond BMI.

Bile doesn’t just digest fat. Bile acids act like hormones that regulate liver fat, blood sugar, insulin sensitivity, energy expenditure, and inflammation.

Nearly half of heart attack patients have normal LDL cholesterol. Research shows insulin resistance and the triglyceride-to-HDL ratio may be stronger predictors of cardiovascular risk.

Exercise doesn’t just strengthen muscles—it triggers a powerful molecular messaging system. Extracellular vesicles released during exercise deliver signals throughout the body that improve insulin sensitivity, reduce inflammation, and enhance metabolic health.

Insulin resistance isn’t just a hormone or calorie problem—it’s a cellular energy problem. Inside your cells, a molecule called NAD⁺ acts like a rechargeable battery for metabolism. When excess glucose causes that battery to stay “overcharged,” energy flow slows, mitochondria struggle, and insulin signaling begins to break down.

Aging isn’t random. At the cellular level, it’s regulated by powerful signaling pathways that determine whether your cells are focused on growth or repair. Two of the most important of