Posted on: April 2, 2026
If you’ve ever left a doctor’s office frustrated because your concerns about fatigue were brushed off with, "It’s just stress," "Your young and healthy, so don’t worry”, or the classic, "Your blood tests are fine, so everything is fine," you’re not alone.
Studies show that medical gaslighting—a phenomenon where patients' symptoms are dismissed or minimized—is alarmingly common, especially among women (#notcrazy.intro - the studies are found in 2:20-4:20 timestamp).
If you feel unheard or stuck in a cycle of exhaustion with no clear answers, I want you to know there’s hope. Fatigue isn’t “Just in your head”, and it’s not something “You will just have to live with”.
In my over 20 years of experience with thousands of patients, I’ve learnt 1 undeniable truth: there is always a reason for persistent fatigue. Today, I’m here to share 12 of the most common culprits behind that unshakeable weariness-backed by science and years of clinical insight. So let’s dive in with actionable steps to get your energy back on track.
1. Sleep: Your Non-Negotiable Superpower
Let’s start with the obvious: most of us simply don’t get enough sleep. We’ve normalized running on five or six hours a night when our bodies actually thrive on seven to nine (https://pubmed.ncbi.nlm.nih.gov/29073398/). And no, one giant latte doesn’t count as a substitute.
If you’re struggling to fall asleep or waking up multiple times a night, it’s time to address the root causes—whether it’s stress, blue light from screens, or an over-packed schedule.
2. Protein: Not Just for Gym Bros
Protein isn’t just about building muscles—it’s also the building block for brain chemistry and hormones. Low protein intake can leave you mentally foggy, moody, and perpetually hungry.
Aim for 20-25 grams of protein per meal to keep your energy steady and avoid that post-lunch carb crash. ( Protein ) Trust me, your body (and brain) will thank you.
3. Gluten: Friend or Foe?
For some of us, gluten is the sneaky saboteur. While not everyone has celiac disease, many experience gluten intolerance, leading to symptoms like bloating, joint pain, and—you guessed it—fatigue.
Try a four-week gluten-free challenge and see how you feel ( Gluten Free ). Then, reintroduce it and monitor your body’s response. You might discover that baguettes aren’t your best friends after all.
4. Exercise: The Paradox of Movement
Here’s the catch-22: you’re too tired to work out, but without exercise, you’ll stay tired. The solution? Start small.
Daily movement—even a brisk walk—can boost energy. Alternate cardio with resistance exercises like yoga or Pilates for a balanced routine ( Exercise ). Think of exercise like brushing your teeth: non-negotiable, even on lazy days.
5. Vitamin B12, Iron, and Vitamin D: The Energizing Trio
Deficiencies, let alone insufficiencies, in these nutrients are some of the most overlooked causes of fatigue, not to mention mental health challenges like anxiety and depression.
Vitamin B12 is crucial for nerve function and energy production.
Iron—especially ferritin, your iron storage—keeps oxygen flowing to your cells, including your brain!
And vitamin D? It’s not just for bones; it’s also a mood and energy booster.
Request these tests from your healthcare provider and aim for optimal, not just “normal,” levels.
6. Thyroid Health: The Butterfly Effect
Your thyroid, a butterfly-shaped gland in your neck, regulates metabolism and energy. Symptoms like hair loss, weight changes, and constant coldness could signal a thyroid issue.
Discuss with your healthcare provider the possibility of completing a comprehensive blood test, including TSH, Free T4, and Free T3. Again, aim for optimal, not just “normal,” levels; don’t settle for partial answers when your energy’s at stake.
7. Sleep Apnea
Sleep apnea—essentially your body’s way of hitting pause on breathing, often multiple times throughout the night—leaves you waking up just long enough to disrupt your sleep cycle (but, of course, you won’t remember a thing). Each little “pause” in breathing can drop your oxygen levels, affecting everything from your heart to your brain.
One potential clue? Snoring. If you or your partner think you're snoring like a chainsaw, it might be more than just a noisy night.
According to the 2016-2017 Canadian Community Health Survey, 6.4% of Canadians have been diagnosed with sleep apnea, with the odds of it spiking in postmenopausal women.
So, if you're hitting a wall of exhaustion despite what feels like a full night's rest, it might be time to dig a little deeper. Your body could be trying to tell you something—preferably while you're still awake!
8. Adrenal Fatigue: When Stress Strikes Back
While not recognized in conventional medicine, adrenal fatigue is a real
struggle for many women juggling stress. Chronic stress can wear out your
adrenal glands, leaving you feeling burnt out ( Is adrenal fatigue ).
A four-point cortisol saliva test can reveal if your stress hormones are out of whack. From there, lifestyle changes and targeted supplements can help you bounce back.
You may need to source your local Naturopathic Doctor to complete this test and further the conversation.
9. Hormonal Hot Messes
From PMS to perimenopause, hormonal shifts can wreak havoc on your energy. Estrogen dominance, low progesterone, or imbalanced testosterone can all be culprits.
The good news? Hormone testing and balancing therapies can restore your energy and mood, so you’re not spending half your life in hormonal turmoil.
Again, you may need to source your local Naturopathic Doctor to complete these tests and further the conversation.
10. Prescription Drugs: The Side Effect You Didn’t Sign Up For
Many medications, from antidepressants to birth control pills, list fatigue as a possible side effect ( Medicines That Can Cause Weakness or Fatigue , Which Medications Cause Drowsiness? , Can Birth Control Make You Tired? ) . If you suspect your prescription is zapping your energy, talk to your prescribing doctor or pharmacist about alternatives.
Remember: never stop a medication without guidance from your healthcare provider.
11. Hidden Infections
Chronic infections, like Epstein-Barr virus or latent Lyme disease, can quietly sap your energy over time. If you’ve explored all other avenues without success, consider testing for these less obvious culprits.
Again, you may need to source your local Naturopathic Doctor to complete these tests and further the conversation.
12. The Bigger Picture
Sometimes, fatigue signals that your body is craving a deeper reset, much like a farming field needs a fallow season to replenish and restore its nutrients. Just as farmers allow their fields to rest and regenerate, your body too requires time to recharge.
Whether it’s addressing gut health, reducing environmental toxins, or prioritizing mental wellness, a holistic approach is key. Just like the earth, you thrive when given the space to rejuvenate.
After all, your energy is your life force, and nurturing it through rest is essential for long-term vitality.
When fatigue hits, don’t accept it as your new normal. Start with lifestyle
tweaks, then dig deeper with testing and professional guidance. Reclaiming
your energy is possible, and your future self will thank you for it.