Chronic Fatigue: 7 Possible Causes and Natural Solutions

You wake up already tired. Your morning coffee no longer has an effect. By 3 PM, you feel like you've run a marathon, even though you've been sitting all day. If this description resonates with you, you're not alone: chronic fatigue is one of the most common reasons for general medical consultations in France.

In this article, we'll review the most common causes, then the natural solutions and dietary supplements that affected individuals try first — to help you understand what might be right for you, without any magical promises.

*This article is for informational purposes only and does not replace medical advice. If your fatigue persists for several weeks, worsens, or is accompanied by other symptoms (weight loss, pain, severe sleep disturbances), consult a doctor to rule out an underlying cause that needs treatment (anemia, thyroid disorder, sleep apnea, depression, etc.).*

 Temporary Fatigue or Chronic Fatigue?

Everyone experiences bouts of fatigue after a bad night's sleep or a busy period. Chronic fatigue is when this feeling of exhaustion has lasted for several weeks, does not improve with rest, and affects concentration, mood, or daily motivation.

The most common causes

1. Lack of restorative sleep
Sleeping 7-8 hours is not always enough: the quality of sleep (complete cycles, few nocturnal awakenings) matters most.

2. Nutritional deficiencies
Iron, vitamin B12, vitamin D, and magnesium deficiencies are most often found in people who feel tired for no apparent reason. A blood test can identify them with certainty.

3. Chronic stress and mental load
Prolonged stress depletes the body's energy reserves over time, even without physical exertion.

4. Sedentary lifestyle
Paradoxically, moving less makes you more tired: a lack of regular physical activity reduces overall endurance.

5. Unbalanced diet
Blood sugar spikes and drops linked to a diet rich in fast sugars cause energy slumps in the middle of the day.

6. Underlying health issues
Thyroid problems, anemia, sleep apnea, or depression can primarily manifest as fatigue. This is why medical advice is important if fatigue persists.

7. Dehydration
Often underestimated, insufficient hydration reduces physical and cognitive performance from the first hours of the day.

The most commonly used food supplements for fatigue

Once obvious causes have been ruled out (or in addition to medical follow-up), here are the supplements most people turn to first.

Magnesium

The most well-known. Involved in over 300 enzymatic reactions, it is often the first deficiency checked for in cases of fatigue associated with stress, irritability, or muscle cramps.

Vitamin B12

Essential for red blood cell formation and nervous system function. A deficiency (common in people following a vegetarian or vegan diet, or with age) often results in marked fatigue.

Iron

Iron deficiency is a frequent cause of fatigue, especially in women of childbearing age. A blood test (ferritin) is recommended before any supplementation, as an excess of iron is not harmless.

Coenzyme Q10 (CoQ10)

Involved in cellular energy production (mitochondria). Often used by people over 40, as natural CoQ10 production decreases with age.

 Guarana

Rich in natural caffeine with a more gradual release than coffee, it is used for a temporary energy boost rather than for chronic fatigue.

Ginseng

A plant classified as an "adaptogen," a category traditionally used in Asia for centuries. Its use dates back to traditional Chinese medicine, where it is found associated with periods of convalescence or prolonged fatigue. The perceived effects, when present, generally set in over time rather than immediately.

A substance still little known in France: shilajit

Unlike magnesium or vitamin B12, **shilajit** is not a common supplement in France, yet it has been used for centuries in traditional medicine originating from the Himalayas and Altai mountains.

It is a mineral resin, rich in fulvic acid and trace elements, which differs from the supplements mentioned above by its origin (mineral rather than plant-based or vitamin-based) and its broad composition rather than being targeted at a single nutrient. To date, shilajit does not benefit from a recognized health claim at the European level (unlike magnesium or vitamin B12, for example): its use is primarily based on ancient tradition, not on scientifically validated efficacy in a consensual manner.

As with any supplement, the traceability and purity of the product (independent laboratory tests, especially for heavy metals) are criteria to check before choosing one.

You can consult our product sheets and analysis certificates for information at altaiorigin.com

How to choose according to your situation

| Your situation | Supplement often sought first |
| Fatigue associated with cramps, stress, irritability | Magnesium |
| Vegetarian/vegan diet, fatigue with paleness | Vitamin B12, iron (ideally after a blood test) |
| Fatigue after 40, perceived decrease in endurance | Coenzyme Q10 |
| Occasional need, rather than chronic fatigue | Guarana |
| Interest in adaptogens or traditional substances | Ginseng or shilajit |

*This table is an informative guide, not a prescription: the choice of a supplement must take into account your personal situation, ideally with the advice of a healthcare professional.*

FAQ

How long does chronic fatigue last?
Chronic fatigue is generally referred to when it lasts beyond 3 to 6 months, but any unusual fatigue that persists for more than a few weeks deserves to be taken seriously.

Which dietary supplement for fatigue is the most effective?
That depends entirely on the cause. An iron deficiency cannot be corrected with magnesium, and vice versa. A blood test remains the most reliable starting point.

Can several supplements for fatigue be combined?
Certain combinations are common (magnesium + vitamin B), but it is advisable to seek advice from a pharmacist or doctor before combining several products.

In summary

Chronic fatigue rarely has a single cause, and rarely a single answer. Before choosing a supplement, it is best to understand the origin of your fatigue — through medical follow-up if it persists — then to learn about the existing options, whether it's a classic like magnesium or a less known substance in France like shilajit.