Why Am I Always Tired?
7 Common Causes of Fatigue in Women
You went to bed early. You slept for eight hours. You may have even skipped your usual evening screen time….and yet, you still woke up exhausted.
Occasional tiredness is part of life. However, feeling drained day after day is different. If fatigue is affecting your concentration, motivation, work, relationships, or ability to enjoy your life, it deserves more than another cup of coffee.
Persistent fatigue can have many causes. Hormonal changes may be part of the problem, particularly during perimenopause and menopause, but thyroid conditions, anemia, disrupted sleep, blood-sugar changes, stress, medications, and other health concerns can produce similar symptoms.
Understanding why you are always tired begins with looking at the whole picture, not assuming it is simply part of getting older.
When Is Fatigue More Than Normal Tiredness?
Normal tiredness usually improves after adequate sleep or a less demanding day. Persistent fatigue may continue even when you are resting and doing your best to take care of yourself.
You may also notice:
- Difficulty getting out of bed
- Afternoon energy crashes
- Trouble concentrating or remembering things
- Reduced motivation
- Feeling physically weak or unusually heavy
- Needing more time to recover after exercise
- Irritability or mood changes
- Waking up tired after a full night’s sleep
These symptoms do not point to one diagnosis. Instead, they provide clues that can help your healthcare provider determine what may be affecting your energy.
1. Perimenopause and Menopause
Hormonal changes during perimenopause and menopause can interfere with sleep, mood, concentration, and overall well-being.
For example, hot flashes and night sweats may repeatedly wake you—even if you do not remember every interruption. Changes in sleep quality can leave you tired, foggy, and irritable the next day. In addition, some women experience insomnia, anxiety, low mood, or changes in motivation during the menopause transition.
The American College of Obstetricians and Gynecologists notes that night sweats and other menopause-related sleep disruptions can contribute to daytime tiredness.
Possible signs that fatigue may be connected to perimenopause or menopause include:
- Changes in your menstrual cycle
- Hot flashes or night sweats
- Difficulty falling or staying asleep
- Brain fog
- Mood changes
- Vaginal dryness
- Changes in sexual desire
Hormone therapy may be appropriate for some patients, but treatment should be based on your symptoms, health history, risk factors, and individual goals.
2. Thyroid Dysfunction
Your thyroid produces hormones that help regulate how your body uses energy. When it does not produce enough thyroid hormone—a condition called hypothyroidism—many of the body’s processes can slow down.
In addition to fatigue, hypothyroidism may cause:
- Unexplained weight gain
- Feeling unusually cold
- Constipation
- Dry skin
- Thinning hair
- Muscle or joint discomfort
- Heavy or irregular periods
- Depression or difficulty concentrating
However, symptoms alone cannot confirm a thyroid condition because many of these concerns overlap with perimenopause and other health problems. Thyroid blood tests may be recommended based on your symptoms and medical history.
3. Iron-Deficiency Anemia
Iron helps your body make healthy red blood cells that carry oxygen. When your iron levels or red blood cell count are too low, your tissues may not receive the oxygen they need, leaving you tired, weak, dizzy, or short of breath.
Iron-deficiency anemia may be especially important to consider if you experience:
- Heavy or prolonged periods
- Bleeding between periods
- A restrictive diet
- Recent pregnancy
- Shortness of breath
- Headaches or dizziness
- Pale skin
- A racing or pounding heartbeat
Heavy menstrual bleeding can gradually deplete your iron stores. Therefore, treating the bleeding may be just as important as replacing the missing iron.
Vitamin B12 deficiency and other types of anemia can also contribute to fatigue, so the appropriate evaluation depends on your symptoms and risk factors.
4. Poor Sleep or an Undiagnosed Sleep Disorder
The number of hours you spend in bed does not always reflect the quality of your sleep.
Insomnia, restless legs syndrome, and obstructive sleep apnea can prevent restorative sleep. Although loud snoring is a well-known sign of sleep apnea, women may be more likely to report fatigue, headaches, insomnia, or frequent nighttime urination.
Talk with a healthcare provider if you:
- Snore loudly
- Wake up gasping or choking
- Have morning headaches
- Wake frequently during the night
- Struggle to stay awake during the day
- Feel tired despite allowing enough time for sleep
Depending on your symptoms, your provider may recommend evaluation by a sleep specialist or a sleep study.
5. Insulin Resistance or Blood-Sugar Changes
Your body relies on insulin to help move glucose from your bloodstream into your cells, where it can be used for energy. When the body becomes less responsive to insulin, blood-sugar regulation may become more difficult.
Some people experience fatigue, increased hunger, sugar cravings, or energy crashes. Insulin resistance is also associated with polycystic ovary syndrome, although it can occur in people without PCOS.
Fatigue alone does not prove that you have insulin resistance or diabetes. However, testing may be appropriate if fatigue occurs alongside symptoms such as:
- Increased thirst
- Frequent urination
- Blurry vision
- Unexplained weight changes
- Slow-healing wounds
- Recurrent yeast infections
Diabetes can develop gradually and may initially cause few noticeable symptoms, which is why your personal and family history also matter.
6. Chronic Stress, Anxiety, or Depression
Long-term stress can leave your mind racing at night and your body depleted during the day. Meanwhile, anxiety may make it difficult to fall asleep, and depression can cause low energy, reduced motivation, sleep changes, and difficulty concentrating.
Women often manage multiple demands at once, including careers, caregiving, relationships, and household responsibilities. During perimenopause, those pressures may overlap with physical and emotional changes that make stress feel even harder to manage.
This does not mean your symptoms are “all in your head.” Mental and physical health are closely connected, and both deserve thoughtful attention.
7. Medications, Nutrition, and Other Medical Conditions
Sometimes fatigue is related to a medication, nutritional deficiency, infection, or another health condition. Sedating allergy medications, certain anxiety medications, some blood-pressure treatments, and other prescriptions may affect energy or alertness.
Other possible contributors include:
- Inadequate nutrition
- Dehydration
- Vitamin deficiencies
- Chronic pain
- Autoimmune conditions
- Heart or lung conditions
- Recent illness
- Pregnancy
- Medication side effects
Because the list is broad, ordering every available laboratory test is not always the best starting point. A focused evaluation based on your symptoms, menstrual history, sleep, medications, lifestyle, and medical history can help determine which tests are actually useful.
What Can You Do About Persistent Fatigue?
Before your appointment, consider keeping a short symptom journal. Record when your fatigue began, when it feels worst, how you are sleeping, and whether it changes with your menstrual cycle, meals, stress, or activity.
It can also help to note:
- Menstrual changes or heavy bleeding
- Hot flashes and night sweats
- Snoring or frequent waking
- Recent weight changes
- Mood or concentration changes
- New medications or supplements
- Changes in thirst, appetite, or urination
In the meantime, consistent sleep and wake times, regular movement, balanced meals, adequate hydration, and limiting caffeine late in the day may support better energy. However, healthy habits are not a substitute for medical evaluation when fatigue persists or interferes with your daily life.
Book A Personalized Evaluation at MORE 901
At MORE 901, we understand how frustrating it can be to feel exhausted without knowing why. We take time to listen, review your symptoms, and look at the factors that may be affecting your energy.
When treatment is needed, recommendations are personalized to the underlying concern. That may include addressing abnormal bleeding, improving sleep, correcting a deficiency, managing a thyroid or metabolic condition, or considering hormone therapy when medically appropriate.
You Deserve More Than “It’s Just Part of Getting Older”
Fatigue is common, but that does not mean you have to accept feeling depleted every day.
If you are always tired, waking up unrefreshed, or struggling with other symptoms of perimenopause or menopause, a thoughtful evaluation can help you understand what is happening and what options may be available.
Dr. Susan Lacy, MD, FACOG, and the team at MORE 901 provide personalized, inclusive gynecologic and hormone care in Memphis. Our goal is not to make assumptions about your symptoms. It is to listen, look deeper, and help you make informed decisions about your health.
Schedule an appointment with MORE 901 to begin a personalized conversation about your symptoms, health, and treatment options.
Seek urgent medical care for fatigue accompanied by chest pain, severe shortness of breath, fainting, confusion, sudden weakness, or thoughts of harming yourself.
