Tired All the Time? A Naturopathic Doctor's Root-Cause Approach to Chronic Fatigue

You sleep. You eat reasonably well. You push through the day. And you're still exhausted. Your bloodwork came back "normal," and you've been told it's stress, age, or just life.

In my opinion, fatigue is never "just" anything. It's a signal that your cells aren't producing the energy they need, and there is almost always a reason why.

I'm Dr. Elie Klein, ND, a naturopathic doctor (naturopath) with 23 years of clinical practice. I've worked with many people who were tired for years before anyone looked beneath the surface.

Who this page is for

This page is for you if you have:

• Fatigue that sleep doesn't fix
• Low energy that makes it hard to get through the day, or afternoon slumps that flatten you
• Brain fog, poor concentration, or slow recovery from exercise or illness
• Unrefreshing sleep, or trouble falling or staying asleep
• Weight changes, feeling cold, or low mood along with the tiredness
• Age-related changes, such as perimenopause or menopause, after which your energy has never been the same
• A diagnosis such as a thyroid condition, diabetes or prediabetes, ME/CFS, or fibromyalgia, and you're still exhausted
• Been told your blood tests are "normal"

Ready to talk? Start with a free 15-minute conversation, or book your first consultation.

Book a Consultation or a Free 15-Minute Call

Fatigue is an energy-production problem, and many things influence it

Every cell in your body makes energy in its mitochondria, in the form of a molecule called ATP. When that process runs poorly, you feel it first as fatigue, and often as brain fog, poor recovery, and a body that doesn't work the way it used to.

Many influences affect how well your cells produce energy. My work is based on a simple idea: when your cells can't produce energy properly, your body can't function properly. Find and fix what's interfering, and many seemingly unrelated symptoms begin to resolve.

The causes I look for as a naturopathic doctor

There is rarely just one cause. Most people I see have two or three working together. These are the main ones, roughly in the order I look at them.

1. Poor energy production (mitochondrial dysfunction)
When your mitochondria can't make ATP efficiently, every system that depends on energy slows down. Many of the causes below end up here.

2. Nutrient deficiencies
Your cells need many nutrients to produce energy. B vitamins, magnesium, CoQ10, and iron are only a few of them. You can be short of what you need without it showing up on a standard lab report.

3. Poor blood sugar control
Glucose is your cells' fuel. If it isn't getting into your cells properly, as in diabetes and prediabetes, or if you're simply not eating enough, your energy drops. See my approach to diabetes and blood sugar.

4. Poor thyroid signaling
Low active thyroid hormone (T3) combined with high cortisol is a common reason for fatigue that doesn't respond to rest. Learn how I approach thyroid problems.

5. Hormonal changes, including menopause
Shifts in estrogen, progesterone, and other hormones during perimenopause and menopause can have a major effect on energy and sleep. See my approach to menopause.

6. Chronic stress and elevated stress hormones
Prolonged stress, overtraining, and under-eating keep your stress hormones high, and over time that drains your energy reserves.

7. Poor sleep and circadian disruption
Insomnia, non-restful sleep, and disrupted light exposure keep your body clock out of rhythm, so even long nights of sleep don't restore you. See sleep disturbances.

8. Gut dysfunction and endotoxin
When the gut barrier is compromised, bacterial fragments called endotoxin (LPS) can pass into your bloodstream and trigger inflammation and fatigue. Read more on gut health.

9. Chronic inflammation
Long-standing inflammation, driven by infections, toxins, or stress, diverts your body's resources away from energy and repair.

10. Toxins and environmental exposures
Mold, heavy metals, and other toxins can interfere with energy production. Some people also report sensitivity to electromagnetic exposures (EMFs).

11. Hidden infections and viral reactivation
Viruses such as EBV, HHV-6, and CMV can reactivate under stress and may contribute to ongoing fatigue in some people.

12. Poor oxygen delivery
Anemia means too few red blood cells to carry oxygen. Circulation problems, such as microclots or low carbon dioxide, may also limit how well oxygen reaches your tissues.

My root-cause, functional medicine approach

Everything needs to be looked at: your lifestyle, your diet, your test results, and your full medical and health history. From there, I order the tests that make sense for you. These often include thyroid markers, blood sugar and insulin, iron, B12 and other nutrients, hormone levels, and markers of inflammation. More specialized tests may be requested depending on your presentation.

Your plan is individualized. It includes a personalized diet plan, lifestyle recommendations, and targeted nutraceuticals, and when needed, bioidentical hormones and other specialized nutraceuticals and substances. I help you put it into practice and support you along the way.

How we work together

1. Before your visit: you complete a health questionnaire and send me your recent lab work.
2. Your consultation: a one-on-one video visit where we go through your history, unhurried.
3. Targeted testing: only what's needed to find what's interfering with your energy.
4. Your plan: diet, lifestyle, and individualized treatments, with my support.
5. Follow-up: we track your energy and your labs together and adjust.

A note about your doctor

My approach isn't meant to replace your doctor's care. It's meant to complement it and, ideally, support and improve it. Fatigue can sometimes signal a condition that needs urgent attention. If you have chest pain, shortness of breath, fainting, or unexplained weight loss, please see your doctor or go to an emergency department.

What we aim for

Waking up refreshed in the morning, steady energy through the day, no afternoon slumps, clearer thinking, better sleep, faster recovery, and a body that feels like yours again. If you'd like to find out what kind of results other people have had, reach out to me and I'll send you a link.

Virtual care across Ontario, or in person in Vaughan (Greater Toronto Area)

Appointments are by secure video from the comfort of your home, whether you live in Toronto, Vaughan, Markham, Mississauga, Hamilton, Ottawa, or anywhere else in Ontario. If you prefer a one-on-one visit in person, you're welcome to come to my home office in Vaughan, in the Greater Toronto Area. Most extended health plans in Ontario cover naturopathic care.

Book a Consultation or a Free 15-Minute Call

Related reading

• Anxiety and poor sleep: a naturopathic doctor's approach
• Menopause symptoms: a naturopathic approach to hot flashes, sleep and mood

Frequently asked questions

Why am I always tired, even after a full night's sleep?

Sleep restores you only if your cells can use the energy it provides. Poor energy production, nutrient shortages, thyroid or blood sugar problems, hormonal changes, or chronic stress can leave you exhausted after eight hours.

Can I have chronic fatigue with normal blood tests?

Yes. A standard panel checks whether values fall within a wide range. It doesn't always show what's happening inside your cells, which is why I look further.

What causes chronic fatigue?

Common causes include mitochondrial dysfunction, nutrient deficiencies, poor blood sugar control, thyroid problems, hormonal changes such as menopause, chronic stress, poor sleep, gut dysfunction, inflammation, toxins, hidden infections, and anemia. Most people have more than one.

Can a naturopath help with chronic fatigue?

Yes. As a naturopathic doctor, I look for what's interfering with your energy production, using your history, lifestyle, and targeted testing, and treat the causes, as a complement to your doctor's care.

Is there a natural treatment for fatigue?

Natural treatment for fatigue, as I practise it, means finding what's interfering with your energy and addressing it through nutrition, nutraceuticals, hormone balance, and lifestyle, as a complement to your doctor's care.

Do you treat ME/CFS or fibromyalgia?

Yes. I work with people diagnosed with ME/CFS and fibromyalgia, using the same root-cause approach. See also chronic pain and migraines.

Can menopause cause fatigue?

Yes. Hormonal changes during perimenopause and menopause often affect energy and sleep.

What is mitochondrial dysfunction?

Mitochondria are the parts of your cells that make energy. When they don't work well, you can feel tired, foggy, and slow to recover.

Do you treat fatigue virtually?

Yes. I see patients across Ontario by secure video, from my home office in Vaughan, in the Greater Toronto Area.

This page is educational and isn't meant to replace your doctor's care.