What causes weakness and lack of strength in the limbs?

In general, weakness and lack of strength in the limbs may be caused by factors such as lack of exercise, malnutrition, anemia, hypokalemia, or cervical spondylosis. If discomfort occurs, it is recommended to seek medical attention promptly. Specific analyses are as follows:

1. Lack of Exercise

When physical activity is insufficient, muscles do not receive adequate training and gradually lose their original strength and endurance, leading to a sensation of weakness and fatigue in the limbs, often accompanied by reduced physical stamina and easy tiring. It is recommended to engage in regular moderate physical exercise, such as walking or jogging, to enhance muscle strength.

2. Malnutrition

Inadequate nutrient intake may lead to malnutrition. When the body does not obtain sufficient nutrients, normal muscle growth and repair can be affected, resulting in weak and powerless limbs, possibly accompanied by weight loss and decreased immunity. A balanced diet rich in adequate protein, vitamins, and minerals is recommended.

3. Anemia

Long-term irregular eating habits may lead to anemia. A reduced number or poor quality of red blood cells in the bloodstream decreases the body's oxygen-carrying capacity, causing symptoms such as limb weakness, dizziness, and palpitations. It is recommended to take medications such as ferrous sulfate tablets, ferrous lactate tablets, or polysaccharide-iron complex capsules under medical guidance for treatment.

4. Hypokalemia

Hypokalemia refers to a pathological condition in which serum potassium concentration falls below the normal physiological minimum level. Low potassium levels reduce neuromuscular excitability, potentially causing symptoms including limb weakness, arrhythmias, and difficulty breathing. Treatment should follow medical advice and may include medications such as potassium chloride sustained-release tablets, methimazole tablets, or potassium citrate granules.

5. Cervical Spondylosis

Cervical spondylosis is usually caused by long-term strain on the cervical spine. When nerve roots are compressed, it may result in limb weakness, commonly accompanied by neck stiffness and numbness in the upper limbs. Conservative treatments such as cervical traction, physical therapy, and acupuncture are recommended under the supervision of a physician.

In daily life, appropriate physical exercise can be increased to improve physical strength and boost immune function.