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It’s Not Your Willpower. It’s Your Insulin.

How I lost 80 pounds — and kept them off for 10 years — by fixing one hormone instead of counting calories. No hunger. No willpower required.

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Why Calorie Counting Keeps Failing

Your body is stuck in Locked-Fat Mode — and no amount of eating less will unlock it.

⚖️

The Calorie Myth

Traditional diets ignore how different foods trigger different hormonal responses. A calorie is NOT just a calorie.

🔒

Fat Gets Locked Away

When insulin is high, your body stays in fat-storage mode. No matter how little you eat, your fat cells remain locked.

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The Yo-Yo Trap

Cutting calories slows your metabolism and increases hunger — setting you up to regain the weight plus more.

As Seen In

The H.A.C.K.S. Framework

Work WITH your biology, not against it.

H
Hormone Balance
Master your insulin response
A
Adaptive Eating
Optimize food order & timing
C
Carb Awareness
Smart swaps without deprivation
K
Ketosis Benefits
Shift to burning stored fat
S
Sustainable Habits
80/20 flexibility principle

The 7 Simple Hacks

Practical strategies you can start using today.

1

Master Food Order

Eat vegetables first to reduce glucose spikes by up to 73%.

2

Low-Glycemic Swaps

Trade high-carb foods for alternatives that cut glycemic load by 91%.

3

Intermittent Fasting

Give your metabolism rest with the simple 16:8 protocol.

4

Functional Fitness

Boost insulin sensitivity with just 7 minutes of daily movement.

5

Prioritize Healthy Fats

Crush cravings with satisfying fats that keep insulin low.

6

Prep Real Food

Eliminate hidden sugars with simple meal preparation.

7

The 80/20 Rule

Sustainable consistency with 20% flexibility built in.

The method in your pocket

Take a photo. Get your Insulin Fix Score.

The 7 Hacks are the system. The Insulin Fix Scanner is that system applied to the meal in front of you. Snap a photo and get one number, 0 to 100, that tells you whether this plate is hurting or helping your insulin. Not calories. Not macros. One number, one decision.

  • One photo, one number. No logging, no food diary.
  • Works on a home-cooked plate, a restaurant menu, or your fridge.
  • Built on the same 7 Hacks from the book.
Scan your first meal free →

3 free scans — no credit card, no expiration.

See The Complete System

How the 7 Hacks flip your metabolic switch from fat-storage to fat-burning.

Fix Your Insulin System Overview

What's Inside the Book

Everything you need to understand your metabolism and take control — backed by science.

  • The complete 7-Hack system step-by-step
  • Why insulin controls fat storage
  • My story: from 280 lbs to lasting change
  • Food swaps that cut glycemic load by 91%
  • Intermittent fasting made easy
  • The 80/20 Flexibility Principle
  • How to break through plateaus
64
Scientific References
7
Simple Hacks
80+
Pounds Lost
Karl Jacob, author of Fix Your Insulin

Hi, I'm Karl Jacob

At 280 pounds, I was heading toward type 2 diabetes. I'd tried every diet — calorie counting, low-fat, exercise programs. They all worked until they didn't.

Then I discovered the real issue wasn't willpower — it was insulin. Over four years, I lost 80 pounds using these strategies. I've kept it off for over a decade.

Now I'm sharing exactly what worked.