Insulin Load Score of Ground Beef (90% lean)

The Insulin Load Score (ILS) estimates how much insulin your body needs to produce in response to a food or meal. Unlike the Glycemic Index, which only considers carbohydrates and measures blood sugar response, the ILS accounts for all three macronutrients — carbs, protein, and fat — because each one contributes to insulin secretion.

Carbohydrates are the strongest driver of insulin release. When you eat carbs, your blood sugar rises and the pancreas releases insulin to shuttle glucose into cells. But protein also triggers insulin — amino acids like leucine and arginine directly stimulate beta cells in the pancreas. Fat has the smallest effect, but still contributes, particularly through incretins released during digestion.

The formula used here is: ILS = 0.56 × net carbs + 0.1 × protein + 0.03 × fat. Net carbs are total carbohydrates minus fiber, since fiber is not digested and does not raise blood sugar. The coefficients (0.56, 0.1, 0.03) reflect the relative insulin-stimulating potency of each macronutrient, derived from clinical research on postprandial insulin responses.

A score of 0–20 is considered Low — these foods cause minimal insulin release and are ideal for blood sugar management. A score of 21–50 is Moderate — normal for balanced meals. A score above 50 is High — typically seen in high-carb foods and large portions, where insulin demand is significant.

Understanding ILS helps you make smarter food choices — not by avoiding insulin entirely (it is a necessary hormone), but by managing how much insulin your body needs to produce at once. Spreading insulin load evenly across meals, pairing high-ILS foods with fiber and fat, and choosing lower-ILS alternatives when possible can all support better energy levels, reduced cravings, and improved metabolic health.