Some people feel that they will gain weight even if they just drink water. Even though they try to lose weight by exercising more and controlling their diet, they still gain weight. It can be frustrating to see their body shape deteriorate. Indeed, being excessively overweight can affect one’s personal image and accelerate the onset of certain diseases. It is necessary to control one’s weight within a reasonable range. However, some people are not worried about being overweight, but about not being able to gain weight no matter what they eat, giving the impression of being frail.

What factors are related to not gaining weight?

1. Fast Metabolism

If you can’t gain weight no matter how much you eat, it’s probably because you have a fast metabolism. A person’s weight is related to their metabolic rate. If the body’s metabolism is fast, the food provided each day is quickly converted into energy and burned off, and basically, you won’t gain weight, maintaining a thin and weak state for a long time.

Some people have a low basal metabolic rate, and the nutrients they obtain are basically not utilized, resulting in little energy consumption. Therefore, they will show signs of nutritional excess and gain weight easily. To maintain a normal metabolism, the key is to develop good habits, especially regular work and rest, maintaining a good mentality, correct exercise, and scientific diet. Whether the metabolism is too fast or too slow, it will bring negative effects.

2. Weak Gastrointestinal Function

Some people eat a lot of food three times a day and even have midnight snacks, but no matter how much they eat, they can’t gain weight. This situation is likely due to the development of gastrointestinal diseases. The digestive system needs to function properly to digest food, maintain a healthy appetite, and eliminate metabolic waste.

However, if the gastrointestinal function is weak, even a slight dietary mistake can lead to diarrhea. People with weak gastrointestinal function should pay attention to their diet, choose easily digestible and light foods to provide nutrition, avoid overeating, and avoid spicy and highly stimulating foods. They should also avoid raw, cold foods, otherwise, they may suffer from poor digestion due to weak gastrointestinal function.

Although they eat a lot, most of the nutrients cannot be absorbed properly, which leads to the continuous consumption of stored protein and fat in the body, resulting in weight loss. People who eat a lot but do not address their gastrointestinal problems will exhibit the characteristic of being unable to gain weight.

3. Development of Diabetes

For many people, the development of diabetes is related to the incorrect maintenance of pancreatic function after its decline. As a chronic disease, identifying warning signs of the illness and taking proactive measures to control blood sugar levels is necessary to reduce damage.

If high blood sugar is ignored and left untreated, diabetes patients will lose weight and become significantly thinner, often without the ability to gain weight regardless of how much they eat, as if they are constantly hungry. The primary cause is the decline in pancreatic function, leading to issues in the metabolism and consumption of carbohydrate substances, resulting in high blood sugar. However, these energy sources cannot be utilized properly, leading to the excessive consumption of stored proteins and fats.

If diabetes is confirmed, treatment should be initiated immediately with the use of blood sugar-lowering medications and insulin injections, and correcting unhealthy lifestyle habits.