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Why Am I Tired All the Time & Nauseous?

By Ruth St. James ; Updated July 27, 2017

Many conditions can cause nausea and a general malaise. If you are feeling nauseated and chronically tired, it is best to discuss the possible causes with your doctor.


Pregnancy, especially in the first trimester, can leave you feeling very tired, run down and nauseated. Throwing up in the morning is common, as is the sudden need for naps during the day.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is an immune deficiency disorder that causes fatigue and nausea, as well as muscle aches, insomnia and general weakness.

Influenza (Flu)

Influenza is always a concern, particularly in winter. It is best not to take the flu lightly; it can be dangerous and may require treatment by a physician, according to the Center for Disease Control.


If your blood is low on iron, your red blood cells become less effective at carrying oxygen to your cells, which can leave you feeling weak and dizzy. Dizziness often causes nausea and vomiting.


A migraine is the narrowing of blood vessels in your brain, causing your headache. Being nauseated and vomiting are common symptoms.

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