Well, Simon, my version of events and life ‘n all things body-brain, say this:
When individuals consume food ‘n drink that’s been tampered wiv using medication/chemicals or Genetic Modification – including but not restricted to – FRUIT ‘n VEGS (primary foods), thentheir body’s immune system will react i.e. allergies.
PINEAPPLES, in particular, have been GM’d for years and will cause an adverse reaction in many consumers.
Watch out for multi health problems exponentially arising as food/drink move further away from Nature.
More advice available from your local 3rd Eye Sage.