Managing Stress and Fatigue: Detecting Hidden Causes

Managing Stress and Fatigue: Detecting Hidden Causes

At BloodTekUK, we understand how overwhelming it can be to feel constantly exhausted or overwhelmed by stress. The modern world is fast-paced, and it’s easy to brush off chronic fatigue as just part of life. However, persistent tiredness and stress might be symptoms of an underlying health issue that can be detected through a simple blood test. Many people in the UK experience these issues—1 in 8 adults say they feel tired "all the time," and another 25% report feeling tired "most of the time". If you're struggling with these symptoms, it’s worth checking whether your health is contributing to the problem. Here’s how a blood test can help uncover hidden causes of fatigue and stress.

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Iron Studies: A Common Cause of Exhaustion

One of the most common culprits of fatigue is iron deficiency. If you're feeling constantly drained, out of breath, or sluggish, a lack of iron could be to blame. In fact, symptoms like tiredness, low energy, and breathlessness are often signs of iron deficiency. This is particularly common among women, especially those with heavy periods or a low-iron diet. A simple blood test measuring iron levels (such as haemoglobin and ferritin) can confirm whether low iron is the issue. Even mild iron deficiencies can lead to a significant drop in energy levels, and addressing this can bring you back to feeling your best.

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Vitamin B12 or Folate Deficiency: The Hidden Energy Zappers

Another potential cause of chronic tiredness is a Vitamin B12 or folate deficiency. These deficiencies develop gradually but can result in extreme fatigue, brain fog, and even mood changes. Vegetarians, vegans, and older adults in the UK are particularly at risk for B12 deficiency, as this vitamin is primarily found in animal-based foods. A blood test can easily check your B12 and folate levels. If a deficiency is identified, correcting it can dramatically improve your energy levels and cognitive function, allowing you to feel more alert and focused in your daily life.

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Thyroid Imbalances: A Hidden Cause of Fatigue and Low Mood An underactive thyroid (hypothyroidism) is another often-overlooked cause of fatigue, low mood, and stress. It’s particularly common in women and can develop slowly over time. Classic symptoms include tiredness, weight gain, feeling cold, and depression. Unfortunately, many people don’t realise their thyroid is to blame for these symptoms. If you’re experiencing persistent fatigue and these symptoms sound familiar, a thyroid hormone blood test (TSH test) can identify if your thyroid is underactive. If confirmed, medication can help restore energy and resolve these “mystery” symptoms.
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Stress Hormones: Cortisol and DHEA Levels

Cortisol and DHEA (Dehydroepiandrosterone) are two critical hormones involved in the body’s response to stress. Chronic stress can cause your cortisol levels to become dysregulated, leading to either excessively high or low levels. Both extremes can contribute to fatigue, sleep problems, and anxiety. In fact, studies show that 50% of people with major depression have elevated cortisol, which indicates an over-stressed system. A blood test measuring cortisol and DHEA can reveal if your levels are abnormally high or low. High cortisol over time may indicate burnout, while low levels could suggest issues with your adrenal glands. Identifying these imbalances early is key to managing them effectively.
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Vitamin D Deficiency: A Key Factor in Fatigue

Low vitamin D is another common cause of tiredness and low energy, especially during the colder months in the UK when sunlight is limited. Many people unknowingly suffer from suboptimal vitamin D levels, which can lead to fatigue and a general “blah” feeling. Blood tests are the only way to know if your vitamin D levels are low. If a deficiency is found, it’s easy to correct with supplements and feel a marked improvement in energy levels and mood.

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Bottom Line: Fatigue and Stress Aren’t Normal – Take Control of Your Health

Feeling chronically stressed or exhausted isn’t something you just have to accept. These symptoms may be the result of an underlying health issue, and with the help of a blood test, you can identify and address the root cause. Whether it’s anaemia, a thyroid imbalance, a vitamin deficiency, or cortisol dysregulation, identifying the cause and taking action can dramatically improve your quality of life. You don’t have to keep pushing through feeling drained—testing your blood could be the first step to feeling more energised and in control.

Take the First Step Towards Better Health Today

Ready to start managing your stress and fatigue more effectively? Book your blood test with BloodTekUK today, and let us help you uncover the hidden causes of your exhaustion. Whether you visit one of our clinics or use our convenient At-Home Blood Testing Kit, we’ve made it easier than ever to get the insights you need. Don’t let fatigue rule your life—take control of your health and feel your best again. Proactive care begins with a simple blood test.

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