What are the causes of thinness ? 5 important reasons

Some people suffer from thinness despite their continuous attempts to gain weight, but these people often lack knowledge of what are the causes of thinness?


Some people suffer from thinness despite their continuous attempts to gain weight, but these people often lack knowledge of what are the causes of thinness?

Thinness may be a simple problem, but not knowing the real reason behind not getting rid of thinness is what may make it a difficult problem to solve.

Therefore, the first step in the proper treatment of thinness, is to know what are the causes of thinness?, and to find the appropriate solution to get rid of the cause of thinness.

In the coming lines, we will discuss the different causes of thinness, and how each of these causes affects the incidence of thinness.

What is thinness?

Underweight, slenderness or underweight is defined as a severe drop in the average weight than the normal rate.

The normal body weight is proportional to the body weight, meaning that each person may have a different normal body weight than the others.

How do I know if I am skinny or not?

In order to tell someone that he is underweight or underweight, we must first know his weight and height.

Next, we create an equation based on the relationship between body weight and height, known as body mass index (BMI), as we divide the body weight by its length.

To say that a person is underweight, the product of this scale must be less than 18.5.

What are the causes of thinness?

What are the causes of thinness?

In the beginning we must understand that not every decrease in body weight calls for concern, it is natural that there are some physical changes resulting from changing some life circumstances.

But if you notice a sudden, severe drop in your weight of up to 5% of your body weight, it may be necessary to consult a doctor, and search for the cause of that sudden drop.

So, the answer to what are the causes of thinness?, states that the causes of thinness are multiple, and can be divided into three types as follows:

physical causes

Some changes in the daily or physical activities of the individual may cause some reduction in weight, such as:

Excessive physical activity

The body needs a certain number of daily calories, when the body does not get this amount of calories, it begins to consume body fat and then muscle mass.

Therefore, when exercising in excess, the body must be compensated with appropriate amounts of food to equalize the calorie requirement.

This often happens to people who engage in a lot of physical activities, or engage in violent physical sports, in such cases, the individual should do a lot of some Nutrients to compensate for the loss.

One of the most important nutrients that must be increased during exercise, is proteins, in order to maintain the stability of muscle mass in the body.

Breast feeding

The mother needs proper healthy nutrition, if the child is completely dependent on it for his food, and since breastfeeding consumes large amounts of calories, some mothers can suffer from low weight or thinness.

Therefore, nursing mothers must eat healthy, balanced meals, as well as be rich in calories to supply them with energy and compensate for the loss of calories.

What are the causes of thinness?

Eating unhealthy and low-calorie foods

Some may think that he eats large amounts of food, yet his weight does not increase, but the truth is that he does not realize that what he eats may be of no nutritional value to his body.

Some people may rely on Food without calories In their diet only, which reduces the daily calories their body gets.

Thus, over time, the level of fat in their bodies decreases, and the body begins to burn muscle mass for energy, so the quality of food that an individual eats plays an important role in the formation of the body and its weight.

So if you want to gain weight, you must eat healthy foods rich in calories, as well as diversify the nutrients that the body gets.

Therefore, healthy, balanced meals should be rich inThe six nutrientsThese are proteins, carbohydrates, minerals and vitamins.

Decreased muscle mass

The body is composed of fat, muscle and water, so when there is a loss of muscle percentage in the body, a person may suffer from low weight or thinness.

As we mentioned, excessive physical activity may lead to a decrease in muscle mass, the lack of use of the body’s muscles for long periods may also cause a decrease in the percentage of muscle mass in the body.

Therefore, the best solution is to engage in moderate physical activity, such as: daily light exercise.

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satisfactory reasons

There are some diseases that can directly or indirectly cause weight loss or emaciation, such as:

1– diabetes

Prepare Type 1 diabetes One of the most common causes of weight loss is that this type of diabetes causes the body’s immune cells to attack the pancreas.

This lowers the level of insulin from the pancreas, which causes the level of glucose in the blood to rise, which is then eliminated by the body through urination.

The body’s disposal of excess glucose in the blood is accompanied by a decrease in calories, and the body does not benefit from those calories, and therefore body weight decreases.

2- Thyroid disorders

Hyperthyroidism leads to an overactive thyroid gland, causing a higher rate of burning food in the body.

The increased burning rate causes the consumption of more calories, even with a good appetite, resulting in weight loss or thinness.

In this case, you should consult a doctor to treat thyroid disorders, and find out the reason behind those disorders.

3- Rheumatoid arthritis

Rheumatoid arthritis is an autoimmune disease that causes chronic inflammation in the body. This inflammation causes loss of appetite in the body and a gradual decrease in weight.

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4- Other diseases

There are also some diseases whose presence is associated with thinness, such as:

  • cancer.
  • Heart disease, liver and kidney disease.
  • Addison’s disease.
  • Gastrointestinal infections, and some diseases, such as: wheat allergy and lactose intolerance.
  • human immunodeficiency virus (AIDS).
  • Diseases of the gastrointestinal tract, such as: stomach ulcers or inflammatory stomach disease (IBD).
  • lupus erythematosus

psychological reasons

There are some psychological disorders that can cause loss of appetite and unwillingness to eat, and consequently weight loss or underweight.

Among the psychological reasons or psychological disorders that can cause weight loss, the following:


Depression affects some areas of the brain responsible for appetite and desire to eat, so having depression may lead to thinness or weight loss.

There are some emotional disorders or psychological stress, which can result in depression that causes anorexia, such as:

  • Emotional separation or divorce.
  • work pressures.
  • Study pressures.
  • Social circumstances, such as the death of a close person.

But it is worth noting that this case of low weight or thinness, can be overcome once the psychological cause of it disappears, and a problem is treated Anxiety and stress.

The person returns to his nature and appetite after treating the psychological problem or getting rid of it.

Eating Disorders

Eating disorders cause loss of appetite and eating too little food. Signs of eating disorders include:

  • Unwillingness to participate in social events.
  • Not wanting to eat in front of others.
  • Tendency to social isolation.

Among the most common eating disorders are:

  • bulimia nervosa disorderBulimia Nervosa).
  • anorexia nervosa (Anorexia Nervosa).

Steps to lose weight

Steps to lose weight

After knowing what are the causes of thinness?, some people must wonder what is the treatment for thinness? Or is it possible to get rid of thinness?

The answer is yes, but you must first know the real reason behind the thinness, and there are some steps that can be followed to gain weight, such as:

  • Eat healthy foods rich in calories.
  • Drink plenty of water.
  • Reducing stress and psychological stress.
  • Take nutritional supplements to gain weight, such as: omega-3.
  • Do light exercise.

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common questions

When is thinness a health problem that requires a visit to the doctor?

In most cases, thinness is not a problem, but there are some signs that cause concern and require medical attention, such as: a sudden and unjustified decrease in weight gain or if there is weight instability, meaning that the weight increases and decreases continuously. Sudden weight loss of up to 5% of body weight over a period of 6-12 months. The effect of being thin is clearly on health, such as: obvious pallor, fatigue, and constant lethargy with the simplest physical activities. Change in bowel habits and urination.

What foods can increase weight?

Foods that help in gaining weight are high in healthy calories, and examples of these foods include: Starchy vegetables and fruits, such as: mangoes, bananas, and sweet potatoes. Whole grains, such as: wheat and barley. nuts. olive oil. Fatty fish. Red meat. Full-fat dairy products.


Know what are the causes of thinness? An essential step for the optimal treatment of thinness, as it should be known that each cause of thinness may call for a different treatment method.

But overall thinness is a problem that can be treated, and it can be eliminated by following a healthy diet and proper diet, and following the doctor’s instructions correctly.


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