Top 10 Hidden Causes of Fatigue Explained.
Clients come to me because of weight gain, hormonal changes, or digestive problems, but the vast majority also struggle with FATIGUE. Often, uncovering the most common causes and even some top reasons for fatigue is an important step in helping them feel better.
Let’s assume a good doctor has already ruled out the most common medical causes of fatigue—like anemia, hypothyroid, rheumatoid arthritis, or diabetes. It’s important to consider some of the top reasons for fatigue that may not be related to these medical conditions.
Now let’s assume the fatigue is still there. In many cases, understanding the top reasons for fatigue can clarify what’s going on.
Here are 10 lesser-known causes of fatigue I look for as a functional medicine practitioner:
1️⃣ Medication Side Effects
Blood pressure medications, statins, antidepressants, antihistamines, and proton pump inhibitors can all cause fatigue, and often these are among the top reasons for fatigue in clients taking prescriptions.
2️⃣ Micronutrient Deficiencies
Nutrients needed for energy production include vitamin B12 and other B vitamins, iron, magnesium, and vitamin D. Lacking these is definitely one of the top reasons for fatigue that I see.
3️⃣ Mitochondrial Function
Mitochondria are the powerhouse of the cell, but they can become damaged by things like pollutants, environmental toxins, infections, medications, or nutrient deficiencies. This is another top fatigue reason.
4️⃣ “Burnout”
What some call “adrenal fatigue” is more specifically a dysregulation of the HPA axis. It happens when chronic stress exhausts both the adrenal glands and the nervous system, adding to the top reasons for fatigue.
5️⃣ Stealth Infections
Lyme disease, EBV, fungal infections, or mold disrupt the immune system and contribute to fatigue, making them top reasons for fatigue that may be overlooked.
SIBO, IBS, and other digestive issues interfere with the absorption of nutrients needed for energy. These gut issues often count among the top reasons for fatigue.
Cortisol, DHEA, estrogen, progesterone, testosterone, and thyroid hormone all affect energy. Hormonal imbalance is definitely a top fatigue reason that’s frequently missed.
8️⃣ Over-Exercising
Both too much and too little exercise can leave the body feeling drained and exhausted. This is one of the top reasons for fatigue in active clients.
9️⃣ Over-Drinking
Caffeine, sugary drinks, and alcohol put a strain on the nervous system and hormones. Overconsumption can be counted among the top reasons for fatigue.
Everything from anxiety to depression to just plain boredom can cause fatigue. Indeed, emotional factors often end up being top reasons for fatigue.
The point is that “fatigue” does not have one clear cause. We need to do the detective work to find the source in each beautifully unique individual. Exploring the top reasons for fatigue is a crucial part of that detective work.