In-depth analysis of visceral fat: a hidden health hazard, principles of hydration, and the pivotal role of insulin.

Human adipose tissue is generally divided into white adipose tissue and brown adipose tissue. White adipose tissue includes subcutaneous fat and visceral fat surrounding organs. A certain amount of visceral fat is necessary, playing a supporting, stabilizing, and protective role, but excessive amounts can seriously affect health and are a manifestation of metabolic disorders. Fat accumulation around internal organs is called "abdominal obesity," which easily leads to fatty liver, type 2 diabetes, and cardiovascular risks.

It's worth noting that even people who appear thin may have excess visceral fat. Prolonged, low-to-moderate intensity aerobic exercise can effectively reduce visceral fat, but the duration must be at least 30 minutes. This is because the enzymes that oxidize and break down fat only gradually increase after 20 minutes of exercise. Swimming, brisk walking, and jogging are ideal choices. Increasing dietary fiber intake is also very beneficial for reducing visceral fat.

Water is essential for life, and it's a crucial factor influencing weight loss. Many obese individuals believe that drinking less water will prevent weight gain, but they often find themselves gaining weight faster than those who drink water normally. This is because water acts as a solvent and carrier for nutrients in various organs, aiding digestion and absorption, accelerating metabolism, and eliminating waste. Prolonged dehydration inevitably leads to constipation, preventing the elimination of metabolic waste and causing weight gain instead of loss.

During weight loss, it's essential to ensure adequate daily water intake, increasing this amount appropriately based on exercise intensity. In hot summer weather, timely hydration is even more crucial. The idea that "drinking cold water will make you fat" is clearly incorrect. Water not only doesn't add calories, but it's also an essential environment for fat burning.

Poor eating habits are a major cause of obesity. Picky eating and unbalanced diets lead to uneven nutrient intake. Long-term consumption of foods high in saturated fatty acids, such as braised pork, not only causes obesity but also easily leads to atherosclerosis. A fondness for snacks, especially high-energy, low-nutrient foods like potato chips and cola, is also a contributing factor. Fresh fruits and vegetables should be chosen scientifically as snacks, and eating after 8 pm should be avoided.

Insulin is a protein hormone secreted by pancreatic beta cells. It is the only hormone in the body that can lower blood sugar and is also the only hormone that simultaneously promotes the synthesis of glycogen, fat, and protein. Insulin secretion is controlled by blood glucose levels. Excessive insulin secretion is clinically known as hyperinsulinemia, which can lead to refractory hypoglycemia and even irreversible brain damage. Excessive insulin can also lead to decreased insulin sensitivity, causing insulin resistance, which is a contributing factor to hypertension, type 2 diabetes, and fatty liver disease.

Insulin promotes fat synthesis and storage, reduces free fatty acids in the blood, and inhibits fat breakdown. Conversely, insulin deficiency leads to elevated blood sugar and diabetes. Insulin deficiency also causes lipid metabolism disorders, resulting in reduced fat storage, increased fat breakdown, elevated blood lipids, and eventually atherosclerosis. Understanding the function of insulin is crucial to mastering the core logic of exercise-based weight loss.

By improving dietary structure and combining it with scientific exercise, the body's insulin levels can be effectively regulated, thereby achieving the goal of fat control and weight loss.