Many deficiencies are:
- Common
- Under-recognised
- Easily tested
- Treatable
And they can affect multiple domains at once
Why Test?
Nutritional deficiencies can look like:
- Chronic fatigue
- Anxiety
- Low mood
- Brain fog
- Dizziness
- Palpitations
- Headache
- Neuropathy
- Hair loss
- Poor sleep
- Increased pain sensitivity
Treating the deficiency may significantly improve symptoms — sometimes more than restrictive diets.
Common Nutrients to Screen
Testing should be guided by your doctor, but commonly considered nutrients include:
- Iron studies (ferritin, iron saturation)
- Vitamin B12
- Folate
- Vitamin D
- Magnesium (serum is limited but may still be used)
- Zinc (in selected cases)
- Thyroid function (not a nutrient, but commonly checked alongside)
In people with fatigue, dizziness, migraine, neuropathy, or low mood, iron and B12 are especially important.
Screening for Celiac Disease should also be considered.
