Why Am I So Tired? Here Are The Most Common Causes Of Fatigue

Why Am I So Tired? Here Are The Most Common Causes Of Fatigue

Are you struggling to keep your eyes open during the day?

Feeling exhausted but don’t know why? You’re not alone.

Extreme fatigue is one of the most common complaints doctors hear.

And it’s not just a feeling of being tired — fatigue can make it tough to concentrate, be productive at work, and enjoy your free time.

There are many possible causes of fatigue.

It could be related to your lifestyle, diet, or sleep habits.

It could also be a sign of an underlying health condition.

To help you get to the bottom of your fatigue, we’ve rounded up the most common causes.

But to understand what causes fatigue, it’s important to first know how fatigue is defined.

What is fatigue?

Fatigue is defined as a feeling of tiredness or exhaustion that is not relieved by rest.

It can be caused by physical activity, mental stress, or medical conditions. (1, 2)

Fatigue can also be a symptom of depression.

In simple words, when you are feeling exhausted and unable to continue with your daily activities, you are probably experiencing fatigue.

Here are the most common causes of fatigue

There are many different causes of extreme fatigue, so it is important to identify the root cause in order to treat it effectively.

Here are the seven most common causes of fatigue:

1. Lack of sleep

This is one of the most common causes of fatigue.

If you are not getting enough sleep, your body will not have the energy it needs to function properly.

Besides, sleep deprivation can also lead to other problems such as anxiety and depression.

To fight fatigue caused by lack of sleep, you should aim to get at least eight hours of sleep every night.

You can also try taking a nap during the day if possible.

If you have trouble sleeping, there are many things you can do to improve your sleep quality.

For example, you can try to establish a regular sleep schedule, avoid caffeine and alcohol before bedtime, and create a relaxing bedtime routine.

2. Dehydration

Dehydration can also lead to fatigue.

When you are dehydrated, your body does not have enough fluids to function properly.

As a result, you may feel tired and weak.

Therefore, make sure you are drinking enough fluids throughout the day.

Aim for eight glasses of water per day.

Fruit juices and sports drinks can also help replenish your body’s fluids.

Caffeinated beverages should be avoided as they can dehydrate your body further.

3. Lack of exercise

If you do not get enough exercise, your body will become weak and tired.


Because exercise helps to increase your energy levels and improve your circulation.

For instance, many studies show that people who exercise regularly are less likely to experience fatigue. (3, 4)

In other words, a sedentary lifestyle can lead to fatigue.

So get at least 30 minutes of exercise every day.

You don’t have to go to the gym.

A brisk walk in the park will also do the trick.

Just get moving!

Also read: 4 Easy Core Exercises Everyone Should Be Doing Daily

4. Poor diet

Eating a poor diet can also cause extreme fatigue.

If you are not getting enough nutrients, your body will not have the energy it needs to function properly.

For one thing, a poor diet can also lead to deficiencies in important vitamins and minerals.

For example, a lack of iron can cause fatigue. (5)

That’s why it’s important to eat a balanced diet that includes plenty of fruits, vegetables, and whole grains.

You should also avoid processed foods, sugary drinks, and excessive amounts of caffeine.

Not sure if you’re eating a balanced diet?

Check out this helpful guide on how to eat a balanced diet.

5. Stress

Stress is a major contributor to fatigue.

When you’re constantly under stress, your body never has a chance to relax and recover.

This can lead to a feeling of being constantly tired.

Besides, stress can also cause insomnia, which further exacerbates fatigue.

To combat stress-related fatigue, it’s important to find ways to reduce your stress levels.

This might include things like exercise, meditation, and time management techniques.

6. Medical conditions

There are many medical conditions that can cause fatigue.

These include:

  1. Anemia
  2. Diabetes
  3. Thyroid problems
  4. Heart disease
  5. High blood pressure
  6. Liver disease
  7. Kidney disease
  8. Urinary tract infection (UTI)

If you think you may have a medical condition that is causing fatigue, see your doctor for a diagnosis.

Treating the underlying condition will help to reduce fatigue.

Here Are The Most Common Causes Of Fatigue

Bottom line

Fatigue is a common problem that can have many different causes.

The most common causes are lack of sleep, dehydration, poor diet, stress, and lack of exercise.

Also, medical conditions such as anemia, diabetes, and heart disease can cause fatigue.

However, the good news is that there are many things you can do to combat fatigue.

By getting enough sleep, staying hydrated, exercising regularly, and eating a balanced diet, you can help to reduce fatigue.

Yet, if you are still feeling tired, see your doctor to rule out any underlying medical conditions.