Feeling sleepy all the time, weak and fatigued throughout the body—what's the cause?

　　Under normal circumstances, excessive sleepiness, general fatigue, and weakness may be caused by insufficient sleep, overexertion, anemia, hypothyroidism, diabetes, etc. These conditions can usually be treated through sufficient sleep, rest, and medication. If symptoms persist, prompt medical attention is recommended. Detailed explanations are as follows:

　　1. Insufficient Sleep: Long-term late nights and irregular sleeping schedules can lead to inadequate sleep duration or poor sleep quality, preventing the body from fully resting, which can cause excessive sleepiness, general fatigue, and weakness. It is recommended to adjust sleep schedules, ensure sufficient sleep time daily, improve sleep quality, and avoid staying up late.

　　2. Overexertion: Prolonged high-intensity physical or mental labor can excessively deplete the body's energy, leaving the body in a state of fatigue, manifesting as excessive sleepiness, general fatigue, and weakness. Adequate rest, reduced workload, and proper nutritional supplementation are recommended to allow the body to recover gradually.

　　3. Anemia: A reduced number of red blood cells or decreased hemoglobin concentration in the peripheral blood can lead to reduced oxygen-carrying capacity of the blood, causing oxygen deficiency in various tissues and organs throughout the body, resulting in excessive sleepiness, general fatigue, and weakness. This condition is often accompanied by pallor, dizziness, palpitations, and other symptoms. Treatment mainly involves taking medications such as ferrous fumarate tablets, ferrous succinate sustained-release tablets, vitamin B12 injections, etc., as directed by a physician.

　　4. Hypothyroidism: Decreased secretion of thyroid hormones slows down the body's metabolic rate and reduces energy production, causing excessive sleepiness, general fatigue, and weakness. This is often accompanied by cold intolerance, weight gain, dry skin, constipation, and other symptoms. Patients can follow medical advice to take medications such as levothyroxine sodium tablets, thyroid extract tablets, Jin Kui Shen Qi pills, etc., for treatment.

　　5. Diabetes: Insufficient insulin secretion or impaired insulin function leads to elevated blood glucose levels. The body cannot effectively utilize glucose to generate energy, leading to energy deficiency in tissue cells, which can cause excessive sleepiness, general fatigue, and weakness. Symptoms often include increased thirst, increased appetite, frequent urination, and weight loss. It is recommended to follow medical guidance in using medications such as metformin tablets, gliclazide sustained-release tablets, insulin injections, etc., for treatment.

　　In daily life, maintaining a regular sleep schedule, avoiding excessive fatigue, eating a balanced diet, engaging in appropriate physical exercise to strengthen physical condition, and undergoing regular health checkups are recommended.