Why am I always tired?

Many things. There are many causes for tiredness and it's impossible to tell you what you have without asking more questions, examine you or run diagnostic tests. Some common causes of fatigue are: obstructive sleep apnea (this is a very important etiology), sleeping problems, homornal imbalances, electrolyte/mineral deficiencies, infections or past viral infections, kidney/liver troubles, stress, depression..
Many possibilities. There are innumerable medical, nutritional and emotional conditions that include being tired as a symptom. These range from simple issues to those far more complex. A good checkup and blood testing would be a good starting point.

Related Questions

Why am I always tired?

Depression, TSH. This may be due to stress, depression, or a low thyroid. I would address the first two possibilities first as these can cause many issues. Read more...
Many possibilities. There are innumerable medical and emotional conditions that include being tired as a symptom. These range from simple issues to those far more complex. A good checkup and blood testing would be a good starting point. Read more...

Why am I always tired?

Impossible to tell. Because it could be from 1000 different causes. Common conditions are low thyroid, anemia, or nutritional deficiencies. Or you might be just overworked. Consult a doctor. Read more...
Possible anemia. Although many causes for your symptoms, the most common cause I see in my day to day practice is anemia. You lose blood every month as a woman with your period, and most teenage girls and young adult women do not get enough iron in their diets to make up for this. Suggest you see your doc and get tested for this - then if needed can alter diet to include more iron or take supplement. Read more...

Why am I always tired?

Many Possibliities. Any physical ailments or conditions? Are you overweight? Do you eat properly? Exercise? Depressed? Read more...
Many possibilities. There are innumerable medical and emotional conditions that include being tired as a symptom. These range from simple issues to those far more complex. A good checkup and blood testing would be a good starting point. Read more...

Why am I always tired and have almost zero energy?

No energy. Anergia can result from several things, both physical & psychological. Some psychological factors include overwork, poor sleep, worry, boredom, lack of exercise, depression. Some physiological factors are cold/flu, thyroid disease, chronic fatigue or other autoimmune diseases. Consult your primary care doc. For thorough workup. Read more...
Many possibilities. There are innumerable medical, nutritional and emotional conditions that include being tired as a symptom. These range from simple issues to those far more complex. A good checkup and blood testing would be a good starting point. Read more...

Why am I always tired, even though I sleep at least 8-9 hours a night?

See your physician. It would be wise to see your physician to have a complete history and physical exam with possible tests to determine the proper diagnosis. There are many reasons why you may be tired which range from anemia, depression, mononucleosis, other infectious causes (bacteria, viral, fungal), hormonal (thyroid), medications (especially allergy meds), and behavioral. Read more...
Sleep disorder. If "always tired" means sleepy during the day or not rested by sleep, you probably have a sleep disorder (i'm presuming you've had blood tests to rule out anemia and hypothyroidism). I recommend you seek out a sleep specialist. Read more...