Often, nobody at the planning table holds the health question. For most households that costs little – unless someone in yours is sensitised or unwell.

Most buying guides can tell you about flow rates. They can't tell you what your household actually needs to filter, or where.

Every rule you've followed governs what goes into your body. Almost none of them examine what surrounds it. Diligence was never the problem: scope was.

The word "remediation" covers everything from S520-standard work to a quick spray and paint. Here's how to tell the difference, and what to ask before the works.

A shared environment is the one exposure a whole household has in common. The variety of symptoms isn't evidence against the house – it's characteristic of it.

An autoimmune diagnosis rarely comes with a why. Could a past or present home be part of what set it off, or what keeps it flaring?

Feeling worse on a detox doesn't mean you've done anything wrong. Often the timing, dose or pace just isn't the right fit for your body and home yet.

Address EMFs the way you'd declutter a room: calmly, one step at a time, at a pace you can manage.

A reactive child is very often not a mystery. They're a system with a smaller buffer, responding honestly to a load nobody has totalled up.

Your protocol may not be the problem – or not the whole problem. Even a well-designed one can't outpace a tap that's still running.

Every practitioner I saw examined my body. Not one asked a serious question about my home. This is the process I built because I needed it.

You spend a third of your life in one room. It deserves an assessment, not just a routine.

The people most likely to renovate for health reasons are exactly the people most vulnerable to a conventionally executed renovation.

Hormones are messengers, and messengers respond to conditions. Before assuming yours are misbehaving, ask what they're responding to.

The report answered the question it was designed to answer. Whether the building is making someone sick was never on the checklist.

The question that almost never gets asked in a gut consultation: where were you living when this started?

An incomplete recovery after moving is common, explainable and addressable. It is not evidence that you imagined the problem.

The tell that points away from a purely psychological explanation: the symptoms track with the building.

An allergy test asks whether your immune system reacts to mould. It doesn't ask whether your building is making you unwell.

If the wheeze eases on holiday and returns within a week of coming home, the pattern you’ve noticed is worth investigating.