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.
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.