Why Am I So TIRED All the Time? 15 Causes of Low Energy, Fatigue, and Feeling Constantly Tired

Why Am I So TIRED All the Time? 15 Causes of Low Energy, Fatigue, and Feeling Constantly Tired

Feeling tired all the time is an extremely common problem that affects nearly a third of the population regularly. Chronic fatigue significantly impacts your quality of life and ability to function optimally. There are many potential reasons for ongoing low energy levels and exhaustion. Identifying and addressing the root causes can help you regain your vitality.

1. Not Getting Enough Quality Sleep

Not getting 7-9 hours of restful sleep per night is one of the most common explanations for daytime sleepiness. To optimize your sleep, stick to a consistent sleep schedule of going to bed and waking up at the same time daily, even on weekends. Limit exposure to blue light from screens at least an hour before bedtime, and make sure your bedroom is dark, quiet, and cool for sleeping. Utilizing white noise and blackout curtains can help improve sleep quality.

2. Poor Diet Lacking Proper Nutrition

Eating a diet high in processed foods, sugar, refined carbs, and unhealthy fats can negatively impact energy levels. Your body feels sluggish when it doesn’t get the nutrients it needs. Eat lean proteins, fruits, vegetables, whole grains, nuts and seeds. Stay hydrated, limit caffeine and alcohol, and avoid sugary beverages.

3. Iron Deficiency Anemia

One of the most widespread causes of fatigue is anemia, a lack of healthy red blood cells, usually due to iron deficiency. Increase your iron intake by eating grass-fed beef, poultry, eggs, spinach, nuts, beans, and iron-fortified whole-grain cereals. Take an iron supplement if recommended by your physician.

4. Underactive Thyroid (Hypothyroidism)

Hypothyroidism is a common condition where the thyroid gland does not make enough thyroid hormones to regulate metabolism. This can lead to tiredness, weight gain, muscle weakness, hair loss, and depression. Get tested by your doctor and take thyroid medication if prescribed.

5. Depression

Ongoing sadness, hopelessness, and lack of motivation are hallmark symptoms of depression. Chronic fatigue frequently occurs along with depression. Seek help from a therapist or psychiatrist, and consider trying antidepressant medication if recommended. Cognitive behavioral therapy can also be beneficial.

6. High-Stress Levels

Chronic stress significantly affects your mind and body, leaving you mentally and physically exhausted. Prioritize stress management by practicing meditation, yoga, deep breathing, journaling, and other relaxation techniques. Make time for hobbies you enjoy. Don’t take on too many responsibilities that drain you.

7. Dehydration

Staying adequately hydrated is vital for energy levels. Even mild dehydration can cause fatigue, headaches, dizziness, and confusion. Drink enough water and hydrating foods like fruits and vegetables throughout the day. Avoid diuretics like caffeine and alcohol, which can dehydrate you further.

8. Sedentary Lifestyle and Inactivity

A lack of regular exercise can leave you feeling sluggish and low on energy. Aim for 150 minutes per week of moderate activity like brisk walking or gentle cycling. Going for a 30-minute walk, even three days a week, can significantly boost energy levels by improving circulation and metabolism.

9. Medication Side Effects

Some prescription and over-the-counter medications can cause fatigue, drowsiness, or brain fog as side effects. These include antidepressants, antihistamines, blood pressure medications, antipsychotics, opioid painkillers, and tranquilizers. Ask your doctor if any medicines could be making you tired.

10. Unhealthy Gut Microbiome

Your gut health affects your whole body, including energy levels. An imbalanced microbiome, food sensitivities, and digestive issues like IBS are often linked to increased fatigue. Eat more fermented foods and fiber, and take probiotic supplements to improve gut health. An elimination diet may also help identify problematic foods.

11. Key Nutrient Deficiencies

Being deficient in critical nutrients like iron, vitamin D, B12, magnesium, and omega-3 fatty acids can drain energy. Ask your doctor to check your levels and supplement if low. Eat a balanced diet with a variety of whole foods to obtain a wide spectrum of vitamins and minerals.

12. Uncontrolled Diabetes

Chronic high blood sugar levels from uncontrolled diabetes can lead to sluggishness and fatigue. See your doctor regularly to keep diabetes under control through medications, diet, exercise, and insulin if needed. Choose healthy complex carbohydrates to maintain steady energy levels.

13.  Chronic Fatigue Syndrome (CFS)

This complex and poorly understood chronic disorder involves debilitating, unexplained fatigue lasting six months or longer, pain, and neurological problems. See a doctor to rule out other conditions before a CFS diagnosis. Pacing activities, stress reduction, and lifestyle adjustments help manage CFS.

14. Obstructive Sleep Apnea

Obstructive sleep apnea is a common sleep disorder where breathing repeatedly stops and starts during sleep due to blocked airways. This interrupts restful sleep and causes daytime exhaustion. See a sleep specialist for an evaluation if you suspect sleep apnea. Using a CPAP machine at night can help treat sleep apnea.

15. Chronic Inflammation

Ongoing inflammation in the body from autoimmune disorders like rheumatoid arthritis or lupus can cause general feelings of tiredness and low energy. Following an anti-inflammatory diet rich in omega-3s and antioxidants may help lower inflammation. Certain supplements like curcumin, ginger, and boswellia can also have anti-inflammatory effects.

Case Study: Michelle’s Transformation

Michelle was a 32-year-old accountant and mother of two young children who struggled with constant exhaustion, difficulty concentrating, digestive issues, and frequent illnesses. She relied on coffee to keep her going and crashed on the couch every evening after work.

After seeing her doctor for bloodwork, Michelle learned she was anemic and vitamin D deficient. She also tested positive for gluten intolerance. Her doctor advised her to take iron and vitamin D supplements, follow a gluten-free diet, and improve her sleep habits.

Michelle began going to bed an hour earlier without technology and instituted a relaxing pre-bedtime routine. She cut out gluten for nutrition and started eating more spinach, eggs, salmon, and nuts. She also began taking probiotics and omega-3 supplements to reduce inflammation.

Within two months of optimizing her diet, micronutrients, sleep routine, and reducing inflammation, Michelle felt like a new person with more energy. She could be more engaged with her kids in the evenings, exercise regularly, excel at work, and pursue hobbies she enjoyed on the weekends. Her case demonstrates that identifying and addressing the root causes of fatigue can lead to life-changing improvements.


Feeling tired always takes an enormous toll on your health, happiness, and quality of life. But you do not have to live with or accept chronic fatigue. Ongoing weariness and low energy often have explainable reasons. You can regain your natural vitality by identifying and properly treating the root causes with lifestyle changes, dietary improvements, stress management, better sleep, nutraceuticals, and medical care. Pay attention to your body’s signals and prioritize getting your energy back!