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Lactose & food intolerance

Intolerantia lactosi et cibi · Nesnášenlivost laktózy a potravin

What it is

A missing enzyme or malabsorbed sugar, not an immune reaction.

Symptoms & signs

  • Bloating
  • wind
  • cramps
  • diarrhoea 30 min to 2 h after the trigger food

🚩 Get help if…

  • call 112 / 911 now Lip or tongue swelling or breathing trouble after food (allergy)
  • see a doctor soon Weight loss or a child not growing
  • see a doctor soon Blood in the stool or diarrhoea waking you at night
  • see a doctor soon Symptoms not better after cutting out the suspected food

Where it strikes

Medical treatment

  • Lactase tablets
  • dietitian-guided elimination and reintroduction
  • breath testing

Natural & lifestyle

  • Hard cheeses and yoghurt are usually tolerated
  • lactose-free products
  • low-FODMAP trial
  • small portions

Emerging & experimental

  • Microbiome adaptation protocols
  • enzyme engineering

Alternative, off-label & anecdotal

Approaches used outside the guidelines, with what their supporters report and what testing has found so far.

  • IgG food-intolerance blood tests — widely sold; they show exposure, not intolerance not confirmed in trials
  • Prebiotic galacto-oligosaccharides to adapt the gut (RP-G28) — small trials early / small studies
  • General digestive-enzyme supplements — mixed reports anecdotal / traditional

ICD codes