Many people think that breakfast is the source of energy for a day. There is a Victorian proverb: "Eat breakfast like a king, lunch like a prince, and dinner like a poor man." In real life, busy office workers are often seen rushing to buy hamburger fries from fast food restaurants, or buy fried dough sticks, egg cakes, noodles, meat buns and so on. Then have a cup of soybean milk or milk tea and coffee for breakfast. Is it really healthy to accumulate such breakfast eating habits for a long time? Especially those who are overweight and have three highs, should they be more careful about what they eat for breakfast?
Terence Kealey, the author of "Breakfast is a Dangerous Meal", is a professor of clinical biochemistry at Cambridge University and is currently the vice president of Buckingham University. He emphasized several important concepts in this book. Yamatonokusushi, a nutritionist in China, will make an in-depth analysis, so that everyone can face up to their breakfast problems more soberly.
Concept 1
Not long after people get up, it is the peak of hormone cortisol secretion, so insulin will rise when eating breakfast. In fact, cortisol in the human body wakes us up, but for some reason, it makes the human body resistant to insulin. If you eat breakfast again, the insulin in your body will rise, even higher than lunch and dinner, making "insulin resistance" more serious.
Rong pharmacist's point of view
What is the hormone cortisol? Does excessive cortisol secretion really produce resistance to insulin, which is not conducive to stabilizing blood sugar in diabetic patients?
Cortisol is a glucocorticoid secreted by adrenal gland, which plays an important role in coping with stress, so it is also called "stress hormone". Cortisol can increase blood pressure and blood sugar levels and produce immunosuppression. Pharmacologically, synthetic cortisol is called hydrocortisone, which can be used to treat allergies and inflammation in addition to supplementing cortisol deficiency.
It is an established fact that the secretion of cortisol has a natural rhythm, which is higher in the morning and lower at night. Cortisol is secreted more. Simply put, stress and poor sleep do cause hyperglycemia, but this resistance is short-term. We will observe that patients with stable blood sugar control went to the otolaryngology department because of a cold, and the doctor prescribed steroids, resulting in soaring blood sugar.
But there is nothing we can do about the secretion of cortisol. When stressed, cortisol secretion will increase. We all know that stress is bad, but there is nothing we can do about it and we can't control it directly. The author's original intention should be to remind diabetic patients to pay attention to the peak of cortisol secretion after getting up. If they eat some breakfast foods that are not conducive to blood sugar control, their insulin may increase, which is not conducive to blood sugar control.
Su's view of nutritionist
How to define breakfast? The first meal after getting up, or must I get up early to eat the defined "breakfast" meal? What is the goal of the breakfast discussion? Is it concentration? Is it physical strength? Is it body fat? Is it weight? These variables need to be reconsidered. It is good to think about the physiological mechanism of human body from the biochemical point of view, but the physiological mechanism is complex and needs empirical research to test.
Back to the clinical experiment, taking diabetic patients as an example, eating rich breakfast (including rich protein, moderate sugar and fat) and reducing calorie intake at dinner really help to control long-term blood sugar (HBA1c; ; Glycosylated hemoglobin), increase insulin sensitivity, and then achieve the effect of weight control. Random experiments also found that eating a delicious and rich breakfast can achieve the effect of slightly controlling blood pressure; In addition, in the observation and research, it is also found that if sugar friends don't eat breakfast, it will cause adverse effects such as high blood pressure and promoting lipid biosynthesis in the body.