Insulin Resistance and Cancer: Why Obesity and Insulin Resistance Reduce Immunotherapy Effectiveness (2026)
The metabolic processes that help your body use food for energy and nourishment are extremely complex. The hormone insulin is a key player. When you eat, sugars from the food enter your bloodstream, which triggers your pancreas to release insulin. That insulin helps the sugar get into your cells to be used for energy. The insulin then ushers any extra sugar to your liver to be stored for later. Insulin also helps your body break down and use lipids, or fats. The amount of insulin in your body goes up and down according to how much sugar is in your bloodstream. But several factors can make your cells resistant to insulin. As a result, your blood sugar and insulin levels will be chronically elevated. Why Obesity and Insulin Resistance Reduce Immunotherapy Effectiveness Short answer: because immunotherapy depends on a metabolically fit immune system — and obesity and insulin resistance reprogram immunity in ways that blunt anti‑tumor response. This article explains how metabolic ...