US doctor reveals 10 hidden signs your body is ‘screaming for help’, even if your reports are 'normal'

Have you ever left a doctor’s appointment with blood test results marked “normal”, yet still felt exhausted, low or simply not yourself? You are not alone.

According to Cleo Tetzloff, a doctor based in California, many people experience ongoing symptoms even when standard lab reports fall within the accepted range. In a recent post shared on Instagram, she outlined ten signs that your body may be asking for support, despite being told that everything looks fine.

Here is a closer look at the warning signs she highlighted.

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A post shared by Dr. Cleo Tetzloff, AP | Functional Medicine & High Performance (@drcleoamelia)

1. Constant Fatigue Despite “Normal” Thyroid Results

If your TSH level is around 3.5, it may be marked as normal. However, Dr Tetzloff suggests that optimal thyroid function is often seen when TSH sits closer to 1.0–2.0. She also notes that many people are only tested for TSH, while Free T3, Free T4 and thyroid antibodies are not assessed, which can leave gaps in understanding symptoms.

2. Brain Fog Even Though B12 Is Within Range

A vitamin B12 level of 280 may be considered acceptable in some labs. However, she explains that levels below 500 may still be linked to fatigue, poor focus and memory problems. Some practitioners prefer levels closer to 800 for optimal wellbeing.

3. Hair Thinning but “Not Anaemic”

You might be told you are not anaemic because your haemoglobin is normal. Yet ferritin, which reflects iron stores, can still be low. A ferritin level of 18 may contribute to hair shedding and fatigue. Dr Tetzloff suggests levels above 50 for thyroid support and above 70 for reducing hair loss.

4. Low Mood Despite “Sufficient” Vitamin D

Vitamin D levels around 28 may be labelled sufficient. However, she says optimal levels for mood, immunity and hormone balance are often between 50 and 80. Low vitamin D has been linked to low mood and anxiety.

5. Weight Gain While Blood Sugar Appears Normal

A fasting glucose of 96 may fall within the standard range. Yet optimal levels may be lower, around 75–85. Fasting insulin is not routinely tested, meaning insulin resistance can go unnoticed for years.

6. Poor Sleep but Cortisol Tested Only Once

Cortisol is usually measured once in the morning. This single reading does not show daily fluctuations. A more detailed four-point cortisol test can reveal patterns such as afternoon crashes or raised levels at night.

7. Hormones Labelled “Normal for Your Age”

Women in their late 30s or 40s may be told their symptoms are simply age-related. Falling oestrogen, lower progesterone and shifting testosterone can affect mood, sleep and energy, but feeling unwell should not automatically be dismissed as ageing.

8. Inflammation Not Fully Assessed

Basic blood panels often rule out major illness but may not check markers such as hs-CRP or homocysteine. Low-grade inflammation can quietly affect long-term health, energy and weight.

9. Ongoing Gut Problems Brushed Aside

Bloating, constipation, irregular digestion or new food sensitivities may be overlooked. Instead of detailed testing such as stool analysis or SIBO evaluation, patients may simply be advised to change their diet without further investigation.

10. No One Looking at the Full Picture

Dr Tetzloff explains that slightly raised TSH, borderline B12, low ferritin, low vitamin D and rising insulin may not seem alarming individually. However, together they can explain persistent symptoms. When each marker is reviewed separately, patterns may be missed.

She writes on Instagram that the healthcare system is often designed to prevent severe illness, rather than help people feel their best.

Her advice includes asking about optimal ranges rather than simply “normal” ones, requesting comprehensive testing and finding practitioners who assess thyroid health, gut function, hormones and blood sugar together.

A Reminder on Medical Advice

While her post encourages people to ask more questions, it does not suggest rejecting medical care. If symptoms continue despite normal results, it may be worth seeking further discussion with a qualified healthcare professional.


Disclaimer: This article is for general information only and is not a substitute for professional medical advice. Always consult your doctor or a qualified specialist regarding health concerns.