Sugar swings: why you are hungry again two hours after eating
In five liters of a healthy person’s blood, one teaspoon of sugar is dissolved. A bun with coffee adds another three or four, and the pancreas has an hour to remove them. It removes them with a surplus because it cannot be precise. Two hours later, blood sugar is lower than it was before the bun, and the brain cries: “eat.” You eat. The cycle continues. This is the swing most people live on without knowing they can get off. Section—blood sugar.
Two breakfasts—two curves
| Time | Oatmeal with banana | Omelet with vegetables and cheese |
|---|---|---|
| 0 | 5,0 | 5,0 |
| 30 min | 8,5 | 5,8 |
| 60 min | 9,0 | 6,2 |
| 120 min | 5,5 | 5,6 |
| 180 min | 4.2 — hunger, brain fog | 5.2 — steady |
| Next meal | in 3 hours, craving something sweet | in 5 hours, feeling calm |
What causes the crash
Below your starting blood sugar is not just “a little hungry.” The brain, which runs on glucose, sees the drop as a threat: adrenaline and cortisol, trembling, sweating, irritability, inability to concentrate, and a craving specifically for something fast—sugar. For some people, this is reactive hypoglycemia, with readings below 3.9. Hence “I can’t go without snacks” and “I’m mean when I’m hungry”—it is not your character, but the amplitude of the swings.
1 tsp
of sugar in 5 L of blood
+3-4
spoonfuls from the bun
2–3 h
before the crash
-20-30%
peak after a 15-minute walk
How to get off the swings
Remove what makes them swing: sugar, flour, grains, potatoes, juices, and large amounts of fruit. Keep what creates a flat curve: protein, fats, and vegetables. If there are carbohydrates on the plate, eat vegetables and protein first and carbohydrates last: the peak is 30–40% lower; this has been measured. A 15-minute walk after eating allows muscles to take up sugar without insulin, reducing the peak by 20–30%. After two weeks without swings, the craving for sweets disappears on its own—there is no one left to demand it. See your own curve with a glucometer; for the long term—HbA1c and prediabetes.
Signs that you are on the swings
- Hunger 2–3 hours after eating
- Sleepiness after lunch
- Irritability and “shaking” if you skip a meal
- Craving sweets in the afternoon
- Waking up hungry at night
- “I can’t go without snacks”
Frequently asked questions
Do fruit cause swings too?
Banana, grapes, and dried fruit—yes, just like a bun. A handful of berries—almost not at all. On the method—berries; everything else rarely.
How can I check without a glucometer?
Eat your usual breakfast and note when you want to eat again. Less than 3 hours means swings. Repeat with an omelet.
How long until the craving goes away?
10–14 days without sugar and flour. The first days are hard; then the receptors adjust. Magnesium and salt help.
- Fatty liver: the organ that responds to sugar firstThe liver is the only organ that processes fructose, and it stores the excess in itself. One in four adults has fatty liver without symptoms. How to suspect what is causing it and why it recovers in 2-4 months.
- HbA1c and prediabetes: the number your doctor calls “borderline”5,7-6,4% — prediabetes, and half of people develop diabetes within 5-10 years. This is the last moment when everything can be reversed through food. Ranges, what the number means, a three-month plan, and when to retest.
- Continuous glucose monitor: two weeks that change how you view “healthy carbs”A sensor on your arm, a graph on your phone. Oatmeal — a peak of 9, omelet — 6. Poor sleep — morning levels higher by one unit. A walk after eating — the peak cut by a third. What it shows and how to read it without panic.
- How to read a lipid panel: a five-step process without panicTotal cholesterol is the last thing to look at. Order: triglycerides, HDL, ratio, LDL in context, ApoB when in doubt. Ranges, pitfalls, and what to bring to the doctor.
- Blood Pressure on a Low-Carb Diet: Why It Drops and What to Do About Your PillsInsulin retains sodium and water — blood pressure rises. Insulin drops — water leaves, and blood pressure decreases by 5-15 over several weeks. What this means for people taking medication, and why salt is not the enemy.
- Cholesterol on a low-carb diet: what rises, what falls, and what to do about LDLTriglycerides down by a third, HDL up, blood pressure down — three heart markers moving in the right direction. And LDL, which rises in 20-30%. How to read this without panic or ignoring it.
Reviewed by Anastasia Zhukova, Fitness Trainer • Author of a Nutrition and Training System • Creator of an AI Personal Support Platform
A human has reviewed this material against the method and real client practice.