The Receipts
Where the numbers that dismiss you actually came from: who set each threshold, in what year, from which population — and what the research says now. One column, with its documents on the table.
Topics
Every guide on this site sits in one of these.
Iron and ferritin
Ferritin, transferrin saturation, iron deficiency without anaemia, supplements, infusions, and the gap between a normal result and enough iron.
Thyroid and Hashimoto's
TSH, free T3 and T4, antibodies, subclinical hypothyroidism, and why a result inside the range can still come with symptoms.
Perimenopause
The decade before menopause: cycle changes, sleep, mood, weight, hot flushes, and what is testable and what is not.
Oestrogen, progesterone, testosterone
What each hormone does, how it is measured, when in the cycle to measure it, and what the numbers do and do not mean.
Cortisol and the stress axis
Cortisol testing, the adrenal-fatigue claim, sleep, blood sugar, and what the evidence actually supports.
Gut and hormones
SIBO, bloating, the oestrogen-gut connection, food reactions that appear in your forties, and what is testable.
Symptoms with no name yet
Hair shedding, exhaustion, brain fog, weight changes, anxiety, cold hands, broken sleep: what each one points at, and which test settles it.
Reading your own labs
Reference ranges and where they come from, what to ask for, when to test, and how to read a printout without a medical degree.