What causes leg weakness and lack of strength in the elderly?

Generally, leg weakness and lack of strength in the elderly may be related to factors such as aging, malnutrition, anemia, arthritis, and osteoporosis. If discomfort occurs, it is recommended to seek professional medical treatment under a doctor's guidance. Specific analysis is as follows:

1. Aging

With advancing age, older adults gradually lose muscle mass, which is a common phenomenon in the natural aging process. Muscle loss leads to reduced muscle strength, manifesting as leg weakness and fatigue. Older individuals are encouraged to engage in moderate strength training and ensure adequate intake of nutrients such as protein to support muscle growth and repair.

2. Malnutrition

Chronic malnutrition in the elderly may deprive muscle tissues of sufficient nutritional support, resulting in decreased muscle strength and leg weakness. A balanced diet rich in adequate protein, vitamins, and minerals is recommended.

3. Anemia

Anemia, often caused by excessive blood loss or malnutrition, reduces the blood’s ability to transport oxygen. Due to insufficient oxygen supply, leg muscles may experience energy deficiency, leading to feelings of fatigue and weakness. Patients may also present with pale complexion, general fatigue, and shortness of breath. Treatment under medical supervision may include medications such as ferrous sulfate tablets, ferrous fumarate granules, or folic acid tablets.

4. Arthritis

Arthritis may result from trauma, environmental factors, or infections. In elderly individuals, arthritis can cause wear and tear of joint cartilage, leading to pain and stiffness that limit joint mobility and contribute to leg weakness. Symptoms may include joint swelling, increased pain, and morning stiffness. Under medical guidance, patients may use medications such as ibuprofen sustained-release capsules, diclofenac sodium gel, or prednisolone acetate tablets.

5. Osteoporosis

Osteoporosis may be associated with genetic, age-related, and dietary factors. Bone loss in the elderly can make bones fragile and prone to fractures, affecting muscle strength and stability and causing leg fatigue and weakness. Common symptoms include generalized body pain, reduced height, and kyphosis (hunched back). Under a doctor’s direction, patients may take medications such as alfacalcidol soft capsules, calcium carbonate D3 granules, or oyster shell calcium carbonate tablets.

Patients are advised to maintain adequate rest, engage in appropriate physical activity, follow a balanced diet, and supplement nutrients essential for the body, all of which may help alleviate symptoms.