23/06/2025
Feeling tired all the time is not just part of getting older, especially if youâre only in your 30s. Fatigue is often your bodyâs way of asking for support.
In clinic, I often see women told their results are ânormalâ even though theyâre still experiencing deep, persistent exhaustion.
Thatâs because ânormalâ isnât the same as optimal, and many important markers arenât flagged unless they fall outside the lab reference ranges.
Here are some of the tests I often recommend when fatigue is part of the picture, and why theyâre important:
đž Iron studies
Even if your ferritin is technically in range, levels under 50 can contribute to fatigue, shortness of breath, restless legs and poor recovery from exercise.
đž B12 and folate
Low-normal levels are common and may contribute to low mood, brain fog, and that heavy, flat kind of tiredness that sleep doesnât fix.
đž Magnesium (serum or RBC)
Magnesium plays a role in energy production, sleep quality, muscle function and nervous system regulation.
đž Thyroid panel including TSH, FT3, FT4 and antibodies
Subclinical thyroid dysfunction can cause fatigue, cold intolerance, hair changes and brain fog, even if TSH is within range.
đž HbA1c and fasting insulin
These give insight into blood sugar regulation, which is a key piece when energy feels inconsistent or crashes after meals.
đž Inflammatory markers such as CRP
Low-grade inflammation may contribute to ongoing fatigue, especially if paired with gut symptoms, poor sleep or brain fog.
đž Vitamin D
Low vitamin D can affect immune health, mood and energy regulation, even if youâre getting time in the sun.
Fatigue is one of the most common signs that something could be improved. With the right testing and context, itâs possible to understand where your body needs support before things escalate.
Listen to your body whisper, before it needs to scream đđŒ
If you need help with fatigue or interpreting blood tests, please feel free to reach out or book a discovery call via the đ in my bio âșïž