Hygiene and balance · Strachan 1989
David Strachan noted less hay fever in larger families and coined the hygiene hypothesis in the BMJ. Graham Rook argued we need microbes we co-evolved with — not street dirt or a skipped vaccine.
At a glance
Hygiene and balance · Strachan 1989David Strachan noted less hay fever in larger families and coined the hygiene…
Hygiene and balance · ALEX farm studiesEuropean farm-child studies linked livestock exposure and raw-milk contexts…
Hygiene and balance · Clean water, sewers and vaccines saved more lives than any romanClean water, sewers and vaccines saved more lives than any romantic idea of a…
Hygiene and balance · Immune systems calibrate on what they meetImmune systems calibrate on what they meet. Too little diversity may leave…
European farm-child studies linked livestock exposure and raw-milk contexts to lower atopy — correlation with caveats. As worms and some infections fell in rich countries, some immune-mediated diseases rose — a pattern, not a prescription to seek worms.
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Hygiene and balance · ALEX farm studies
European farm-child studies linked livestock exposure and raw-milk contexts to lower atopy — correlation with caveats. As worms and some infections fell in rich countries, some immune-mediated diseases rose — a pattern, not a prescription to seek worms.
Hygiene and balance · Clean water, sewers and vaccines saved more lives than any roman
Clean water, sewers and vaccines saved more lives than any romantic idea of a muddy childhood. Balance means keeping those wins while asking why some immune diseases rose. Hay fever was rare in early clinic notes and common in late-20th-century cities. That contrast invited theories.
Hygiene and balance · Immune systems calibrate on what they meet
Immune systems calibrate on what they meet. Too little diversity may leave regulation twitchy; too much sewage kills. Needed courses save lives and also thin early-life diversity — a trade-off, not a ban.
This is education from the atlas. It does not diagnose and does not prescribe a dose. It does not replace the full topic page.
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- Clean water, sewers and vaccines saved more lives than any romantic idea of a muddy childhood. Balance means keeping those wins while asking why some immune diseases rose. Hay fever was rare in early clinic notes and common in late-20th-century cities. That contrast invited theories.
- Does this page rank people or nations?
- This is education from the atlas. It does not diagnose and does not prescribe a dose. It does not replace the full topic page.
- Where is the longer entry?
- Immune systems calibrate on what they meet. Too little diversity may leave regulation twitchy; too much sewage kills. Needed courses save lives and also thin early-life diversity — a trade-off, not a ban.
Next question: Influenza · Open the topic: Hygiene and balance
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