A healthy person’s blood sugar is one teaspoon for all five liters. A bun adds another three or four, and the pancreas has to remove them within an hour. Years of such rises—and it gets tired, the cells stop responding, fasting sugar creeps from 4,8 to 5,8, and the doctor says “borderline” without using the word “prediabetes.” This section is about what happens to sugar after every meal, how to measure it, and what the plate does about it. The main page of the topic is metabolic health.
4,0-5,5
mmol/L fasting — normal
5,7-6,4%
HbA1c — prediabetes
< 7,8
2 hours after eating
25%
of adults — fatty liver
Fast carbohydrates mean blood sugar reaches 8-10 after 30-60 minutes. The pancreas releases extra insulin, and sugar falls below its starting level after 2-3 hours. Below the starting level means hunger, weakness, irritability, fog, and a craving for the next bun. And so 4-6 times a day. Every amplitude stresses the blood vessels; every insulin wave sends fat into storage and takes not a gram of it out. After an omelet with vegetables, the curve is almost flat—sugar is 5,5-6,5 and steadily falling. Analysis — blood sugar swings.
Glycated hemoglobin is average blood sugar over three months; one good morning cannot fool it. 5,7-6,4% means prediabetes, and half of such people develop diabetes within 5-10 years. Doctors often say “borderline, keep monitoring.” The truth: this is the last moment when everything can be reversed through food without medication, and on a low-carbohydrate diet HbA1c falls by 0,5-1% in three to six months. Analysis with ranges and a plan — HbA1c and prediabetes.
| Test | Normal | Prediabetes | Diabetes | What it shows |
|---|---|---|---|---|
| Fasting glucose | 4,0-5,5 | 5,6-6,9 | 7,0+ | one morning |
| HbA1c | up to 5,6% | 5,7-6,4% | 6,5%+ | average blood sugar over 3 months |
| Fasting insulin | 2-10 μU/mL | 10-20 | — | years ahead of blood sugar |
| 2 hours after eating | up to 7,8 | 7,8-11,0 | 11,1+ | how the body handles food |
| HOMA-IR | up to 2,7 | 2,7+ | — | insulin resistance |
A continuous glucose monitor is a sensor on your arm for two weeks, with a graph on your phone. It shows what no fasting test can: how the body responds to oatmeal, an apple, an omelet, poor sleep, and a walk after eating. Two weeks with a sensor change your attitude toward “healthy carbohydrates” more reliably than any article. It is not required—but if possible, it is the clearest metabolism lesson. Analysis — what a glucose monitor shows.
All cells use glucose. Only the liver uses fructose, and it turns excess fructose into fat and stores it in itself. Sugar is half fructose; honey and juices are almost entirely fructose. One in four people has fatty liver, without symptoms, “found by chance on an ultrasound”; slightly elevated ALT is the first signal. This is a step toward insulin resistance, but the liver recovers faster than any other organ: without sugar and fructose, the fat disappears in 2-4 months. Analysis — fatty liver.
Glucose, fasting insulin, HbA1c, ALT, triglycerides. Waist circumference. This is the starting point—without it, there is nothing to compare with in three months.
Sugar, flour, grains, juices—zero. Salt and water as normal, otherwise the transition is difficult. Hunger between meals disappears by the end of the second week.
Three meals, a 14/10 window, 15 minutes of walking after each meal. Morning sugar may “jump”—the liver is releasing its stores; look at HbA1c.
Twice a week. Muscle is the main consumer of glucose without insulin. This is when fasting insulin falls.
HbA1c minus 0,3-0,7, lower insulin, ALT approaching normal, waist minus 5-8. Continue until normal, then once every six months.
Fasting sugar rises last. Insulin and HOMA-IR change years earlier.
Three months, not one morning. Test once every six months.
This is the last moment without medication. Act now.
15 minutes reduce the sugar peak by 20-30%. Free.
In women, blood sugar follows the cycle: during the luteal phase, insulin sensitivity is lower, and the same food produces a higher peak—hence cravings for sweets before menstruation and “the weight has stalled” on day 20. During perimenopause, falling estrogen constantly reduces sensitivity, and after 45 prediabetes occurs more often specifically in women with normal weight. PCOS is based on insulin resistance in 70-80% of cases. Therefore, a “fasting insulin” test is more important for a woman than glucose: it shows the problem years before blood sugar does. Analysis — insulin resistance in women, appetite and the cycle.
During the first few weeks, the liver releases its stores, and morning blood sugar may be 5.5-6.0 with normal HbA1c. The “dawn phenomenon.” Check HbA1c and blood sugar 2 hours after eating.
Yes, and it is included in the recommendations of several countries as a way to achieve remission. Only with a doctor: medication doses are reduced over several weeks; without monitoring, there is a risk of hypoglycemia.
Baseline before starting, then after 3 months, then once every six months: HbA1c, glucose, insulin.
A teaspoon of sugar in five liters of blood is normal. A bun adds three more, the pancreas removes them with a surplus, and two hours later comes hunger, brain fog, and cravings. What the swings look like and why they do not happen after an omelet.
The 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.
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.
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.
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.
