Or maybe you just don’t have the energy to get things done the way you once did.

Moodiness,irritability, and anxiety are just a few other effects you might experience.

It’s helpful to begin by determining your sleep needs.

The “average” adult needs around eight hours per night, but few people are average.

You may also have a sleep debt you have accumulated, and this requires extra sleep to catch up.

Depression

Depressionis a condition believed to be influenced by abnormalities in mood-regulating chemicals calledneurotransmittersin the brain.

People with depression tend to haveproblems with sleepand energy levels.

They may have trouble falling asleep or wake up during the night.

Some people with depression may also have trouble waking up in the morning andsleep too long.

Depression often makes people feel sluggish and unmotivated.

If you are having suicidal thoughts, contact theNational Suicide Prevention Lifelineat988for support and assistance from a trained counselor.

If you or a loved one are in immediate danger, call 911.

For more mental health resources, see ourNational Helpline Database.

If you feel like you may be depressed, talk to a healthcare provider.

They may recommend that you also see a therapist who can help you work through your feelings.

Untreated depression not only leads to tiredness but can affect every aspect of your life.

Hemoglobin is the substance that gives red blood cells their color.

It is also involved in carrying oxygen throughout your body.

As a result, you will feel tired or weak.

You may also have symptoms such as shortness of breath, dizziness, or headaches.

Iron deficiency alone, even without anemia, is now thought to be a cause of chronic fatigue.

A healthcare provider can order a blood test that can tell you whether or not you have anemia.

Hypothyroidism

Hypothyroidism is a disease in which the thyroid gland does not produce enough thyroid hormone.

Thankfully, a blood test can determine if your thyroid gland is functioning within acceptable guidelines.

If not, a healthcare provider can prescribe medications to help treat your underactive thyroid.

This disrupted and poor quality sleep can be a common cause of daytime sleepiness.

Hepatitis

Hepatitis is an inflammation of the liver with several possible causes ranging from infections to obesity.

When the liver is inflamed, these important processes can come to a halt.

There are several reasons that diabetes can cause you to feel tired all the time.

Changes in blood sugar levels play a part in fatigue triggered by diabetes.

When your blood cells don’t get enough glucose, you may experience tiredness as a result.

It is unknown what causes this condition.

Medications

Fatigue can be a side effect of several different medications.

2014;2014:870320. doi:10.1155/2014/870320

Albert PR, Benkelfat C, Descarries L.The neurobiology of depressionrevisiting the serotonin hypothesis.

Cellular and molecular mechanisms.Philosophical Transactions of the Royal Society B: Biological Sciences.

2017;117(10):1422- doi:10.1017/S0007114517001349

Chaker L.Hypothyroidism.The Lancet.

2021;10(5):e017780.

Deliberations of the Sleep Apnea Definitions Task Force of the American Academy of Sleep Medicine.J Clin Sleep Med.

2017;21(3):565-578. doi:10.1016/j.cld.2017.03.011

National Institute of Health.