Feeling drowsy, lacking energy, and always wanting to sleep—what are the possible causes?

Generally, the causes of feeling drowsy, lacking energy, and constantly wanting to sleep include insufficient sleep or poor sleep quality, malnutrition and irregular eating habits, anemia, sleep disorders, and cerebral vascular insufficiency. It is recommended to seek timely medical attention and follow medical advice for treatment. The specific details are as follows:

1. Insufficient Sleep and Poor Sleep Quality: Long-term lack of adequate sleep or poor sleep quality prevents the body from obtaining sufficient rest and recovery, leading to fatigue and drowsiness during the day. This may be caused by poor sleeping environments, high life stress, or irregular作息 (作息 here should be translated as作息 habits). To improve sleep environment and habits, keep the bedroom quiet, dark, and at a comfortable temperature, avoid using electronic devices before bedtime, and establish regular作息 habits.

2. Malnutrition and Irregular Diet: The body requires various nutrients to maintain normal physiological functions. Long-term dietary imbalance and lack of essential nutrients such as vitamins and minerals can lead to a decline in bodily functions, causing symptoms such as drowsiness. Adjust your diet, maintain regular eating habits, and avoid overeating or excessive dieting.

3. Anemia: Anemia refers to insufficient quantity or quality of red blood cells in the blood, resulting in inadequate oxygen and blood supply, which can cause symptoms such as fatigue and lack of energy. This may be caused by deficiencies in essential hematopoietic materials such as iron or folic acid, or impaired bone marrow hematopoietic function. It may also be accompanied by pallor. Iron supplements such as iron dextran injection, ferrous sulfate compound granules, or iron dextran tablets may be used under medical guidance.

4. Sleep Disorders: Sleep disorders can reduce sleep quality, preventing the body from obtaining sufficient rest and recovery, thereby causing symptoms such as fatigue and lack of energy, often accompanied by difficulty falling asleep. Blood-nourishing and tranquilizing medications such as Zao Ren An Shen Capsules, Bai Le Mian Capsules, or Jie Yu An Shen Granules may be used under medical guidance.

5. Cerebral Vascular Insufficiency: Cerebral vascular insufficiency can lead to inadequate supply of oxygen and nutrients to the brain, causing symptoms such as fatigue and lack of energy, often accompanied by dizziness. This may be caused by factors such as cerebral atherosclerosis or cerebral vascular stenosis. Medications may be prescribed by a physician, such as aspirin enteric-coated tablets, clopidogrel bisulfate tablets, or ticagrelor tablets, which can inhibit platelet aggregation.

In daily life, it is important to maintain a balanced diet to avoid malnutrition and consume adequate amounts of foods rich in vitamins and minerals.