Have you ever experienced being overcome with intense drowsiness after lunch, even in the middle of an important meeting? This drowsiness might not just be due to lack of sleep or fatigue, but could be a cry for help from your blood vessels. For people in their prime working years, aged 40-60, intense drowsiness after meals can be a warning sign of abnormal blood sugar levels
This article clearly explains the relationship between post-meal drowsiness and blood sugar fluctuations, why it shouldn't be ignored, and the latest medical approaches
table of contents
Could intense post-meal drowsiness be caused by a blood sugar spike?
The irresistible drowsiness that strikes after a meal may be caused by a phenomenon called a blood sugar spike occurring in the body
What is blood sugar level?
Blood sugar level refers to the concentration of glucose in the blood. When you eat carbohydrates such as rice, bread, and sugar, they are digested and broken down into glucose in the body, and when this glucose is absorbed into the bloodstream from the intestines, blood sugar levels rise. Even in healthy people, blood sugar levels temporarily rise after eating
How blood sugar spikes occur
The human body has a mechanism called homeostasis that constantly tries to maintain a stable internal environment. Therefore, in a healthy state, blood sugar levels return to normal within about two hours after eating thanks to the action of insulin. However, if blood sugar levels are 140 mg/dl or higher two hours after eating, it is considered postprandial hyperglycemia
To lower these rapidly rising blood sugar levels, the body's homeostatic mechanisms trigger an overproduction of insulin, which then causes a sharp drop in blood sugar levels, resulting in a state of hypoglycemia. As a result, the brain's energy supply becomes unstable, leading to strong drowsiness and decreased concentration
Reasons why blood sugar spikes occur
The main reason for rapid fluctuations in blood sugar levels is insufficient insulin secretion from the pancreas, or inadequate insulin function. In addition, a diet and eating habits that are heavily reliant on carbohydrates can also trigger these fluctuations
Don't ignore it! Hidden diabetes risk and serious damage to blood vessels
A condition where blood sugar levels spike only after meals is sometimes called "hidden diabetes." The problem is that it's easily overlooked in typical health checkups, where blood is drawn on an empty stomach, and fasting blood sugar levels are normal
Furthermore, it has become clear that there is a strong relationship between hemoglobin A1c (HbA1c), which indicates the average blood glucose level over the past one to two months, and postprandial blood glucose levels. In severe cases of diabetes where HbA1c is very high, the impact of postprandial blood glucose levels on HbA1c is limited. However, in cases where HbA1c is mild to moderate and relatively well controlled, the rise in postprandial blood glucose levels becomes a major factor in raising HbA1c. In fact, from the very early stages when diabetes is suspected, postprandial blood glucose levels are often the first to worsen
Therefore, even people whose fasting blood glucose levels are within the normal range may experience abnormally high blood glucose levels after meals. Furthermore, even if fasting blood glucose levels are improved to the target level, HbA1c levels often remain high. Improving postprandial hyperglycemia from an early stage is directly linked to maintaining good HbA1c levels. As a result, it helps to prevent the onset and progression of diabetes and also prevents the worsening of fasting blood glucose levels
Leaving these blood sugar spikes untreated can damage the inner walls of blood vessels, leading to arteriosclerosis and potentially causing life-threatening diseases such as stroke and myocardial infarction, so caution is necessary. To accurately diagnose postprandial hyperglycemia, a test called "75g OGTT (75g Oral Glucose Tolerance Test)" is effective. After fasting for more than 10 hours, a test drug containing 75g of glucose is ingested, and the changes in blood sugar levels are measured and determined at 30, 60, 90, and 120 minutes
Source: Ministry of Health, Labour and Welfare | Health Japan 21 Action Support System ~Health Promotion Support Network~ "Postprandial Hyperglycemia"
Source: Correlations of Fasting and Postprandial Blood Glucose Increments to the Overall Diurnal Hyperglycemic Status in Type 2 Diabetic Patients: Variations with Levels of HbA1c
Dietary strategies and the latest medical approaches to controlling blood sugar levels
To protect your future health, it's essential to review your daily lifestyle and take steps to prevent rapid spikes in blood sugar levels. This article explains dietary strategies you can implement starting today, along with the latest medical advancements
Dietary strategies for controlling blood sugar levels
First, let's try to improve how we eat our meals on a daily basis
- Eating order: Start with vegetables (fiber), then meat/fish (protein), and finally rice or bread (carbohydrates). Be mindful of the "veggie-first" approach
- Eating method: Eat slowly and chew thoroughly, and avoid eating too quickly
- Combinations: Avoid eating two carbohydrate-rich foods together, such as ramen and fried rice
- Habits: Eat three regular meals a day and limit snacks and sugary drinks
Light exercise after meals can help control the rise in blood sugar levels. Regular exercise to build muscle is also important
Source: Hamamatsu City | Beware of "blood sugar spikes," the gateway to diabetes!
Source: Diabetes Treatment Guidelines | Chapter 3: Diet Therapy
Medical approaches to controlling blood sugar levels
For treating diabetes, there is an option called regenerative medicine using stem cells, which aims to fundamentally repair and improve the function of blood vessels. This treatment involves isolating and culturing stem cells from the patient's own adipose tissue and administering them intravenously via infusion. Stem cells that enter the body have the property of gathering in the damaged area via the bloodstream (homing effect)
The collected stem cells transform according to their purpose, such as replacing missing cells or creating new blood vessels. This is expected to repair the function of insulin-secreting pancreatic beta cells, regenerate damaged blood vessels, and improve insulin resistance
Source: Japan Regenerative Medicine Association, an officially recognized organization | Japan Regenerative Medicine Attendant Center, "Stem Cell Therapy for Diabetes"
Source: Pediatric and Adolescent Diabetes Consensus Guidelines | IV. Transplant and Regenerative Medicine
summary
If you experience strong drowsiness after meals, it may be a sign that your blood vessels are being damaged in ways you can't see, increasing your future health risks. First, it's important to review the order and content of your daily meals to prevent rapid fluctuations in blood sugar levels. If you've been feeling tired lately or are worried about your health checkup results, start taking action early, considering not only detailed examinations but also the latest approaches such as regenerative medicine