Lower Energy Levels
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Reviewed By:

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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  • Energy levels have dropped

  • Energy levels have fallen

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Content updated on Jan 4, 2023

About the symptom

Another name for decreased energy levels is fatigue. Several medical conditions, such as heart disease, many types of cancer, autoimmune diseases such as lupus and multiple sclerosis, and anemia (too few red blood cells), include low energy as a symptom. Fatigue can also be a symptom of sadness or anxiety or a side effect of certain medications.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Change in personality

  • Disorder of consciousness

  • Decrease in sleeping desire

  • Seizure attack

  • Difficulty breathing / breathlessness

  • Numbness / sensory disorder

  • Recent weight loss

  • Suicidal thought

Possible causes

  • Sleep disorder

    Sleep disorders are conditions that affect the quality, timing, or duration of your sleep, impacting your ability to function when you're awake. There are many types of sleep disorders, including disturbances in sleep quality or quantity, excessive daytime sleepiness, abnormal behaviors during sleep, sleep disorders related to mental disorders, and more.

  • Adjustment disorder

    A psychological disorder, often with low mood and anxiety. It is triggered by a sudden change in life circumstances, e.g. divorce or losing a job.

  • Depression

    Depression is a mental illness that leads to low mood, reduced energy levels, and changes in sleep. This affects everyday activities like attending school and work. As the condition worsens, patients might have suicidal thoughts. Although stress and past trauma can cause depression, it can take time to identify and address causes, and genetic factors may also be at play.

  • Schizophrenia
  • Shingles
  • Sleep apnea syndrome

Related serious diseases

  • Dehydration

    Dehydration happens when you lose more fluid than you consume, leaving your body without enough water. Common causes include inadequate intake, diarrhea, vomiting, and fever. Dehydration can also cause serious complications like seizures, urinary and kidney problems.

  • Cerebral infarction
  • Hyponatremia
  • Hypocalcemia

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you feel like your energy levels has fallen? For examples, feeling less energetic and less active.

Other Related Symptoms

Similar symptoms or complaints

Reviewed By:

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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